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  • Spektralphotometrie  (30)
  • man  (14)
  • Springer  (44)
  • 1975-1979  (44)
  • 1976  (44)
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  • Springer  (44)
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  • 1975-1979  (44)
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  • 1
    Electronic Resource
    Electronic Resource
    Effect of the aldosterone antagonist canrenone on plasma aldosterone concentration and plasma renin activity, and on the excretion of aldosterone and electrolytes by man (1976)
    Springer
    European journal of clinical pharmacology 9 (1976), S. 253-257 
    Details
    ISSN: 1432-1041
    Keywords: Aldosterone ; renin ; aldosterone antagonist ; canrenone ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Canrenone was administered in doses of 2×82 mg and 2×164 mg per day over a period of 10 days to diabetic patients without cardiovascular, liver or kidney involvement. Aldosterone excretion and plasma aldosterone increased only slightly during both regimes. There was a clear-cut increase in aldosterone excretion only after discontinuation of carenone. Excretion of sodium potassium and fluid was not significantly changed either during or after treatment. The lack of effect of canrenone on the kidney was in contrast to the significant decrease in serum sodium and increase in serum potassium, and the significant, dose-dependent rise in plasma renin activity following canrenone administration. The increased plasma renin activity persisted for some days after discontinuation of canrenone. It is suggested that canrenone primarily exerted its effect in the distal part of the large intestine where ionic movements are most affected by aldosterone. The disproportionately slight increase in plasma aldosterone concentration and aldosterone excretion, in spite of the greatly elevated plasma renin activity and serum potassium level, is considered to be due to a direct inhibitory effect of canrenone on aldosterone production in the adrenals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561657
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  • 2
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of lofepramine in man: Relationship to inhibition of noradrenaline uptake (1976)
    Springer
    European journal of clinical pharmacology 9 (1976), S. 291-298 
    Details
    ISSN: 1432-1041
    Keywords: Tricyclic antidepresent ; lofepramine ; single- and multiple-dose kinetics ; noradrenaline and 5-hydroxytryptamine uptake ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of lofepramine, an imipramine analogue, have been studied by administering single oral doses to volunteers, determination of plasma levels of lofepramine and desmethylimipramine after ten days of oral administration to patients, and by relating plasma levels to the effect on uptake of noradrenaline by isolated rat irides and brain slices of plasma samples collected during treatment. The results indicate that lofepramine undergoes pronounced first pass elimination and that desmethylimipramine is a major metabolite of it. During steady-state conditions the plasma level of lofepramine fluctuates considerably between doses. A linear relation was found between inhibition of neuronal uptake of noradrenaline and the plasma concentration of desmethylimpramine. No effect was seen on the uptake of 5-hydroxytryptamine in brain slices incubated in patients' plasma which suggests that neither lofepramine nor its metabolites formedin vivo in man affect neuronal uptake of this amine. Lofepramine belongs to the group of tricyclic anti-depressants which preferentially inhibit noradrenaline uptake.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561663
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  • 3
    Electronic Resource
    Electronic Resource
    Absorption of β-methyl-digoxin determined after a single dose and under steady state conditions (1976)
    Springer
    European journal of clinical pharmacology 9 (1976), S. 307-314 
    Details
    ISSN: 1432-1041
    Keywords: Absorption ; man ; β-methyl-digoxin ; serum concentration ; urinary excretion ; radio-immunoassay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Single doses of β-methyl-digoxin 0.4 mg were given to groups of 17 – 18 healthy volunteers as an intravenous infusion lasting 2 hours, or orally as Lanitop Liquidum® or Lanitop® tablets. The serum glycoside concentration and urinary glycoside excretion were measured over 8 and 32 h. The absolute bioavailability from the oral preparations in comparison with the infusion was lower for the first 8 h than for the entire 32 h of the investigation; the relative bioavailability from tablets was the same as from the solution for both periods. For both periods the area under the serum concentration/time curve and the urinary glycoside excretion were significantly lower after administration of the tablets than after intravenous infusion. Taking the average of both parameters, the absolute bioavailability of β-methyl-digoxin was about 80% from the solution and about 70% from the tablets. In 18 patients undergoing intravenous or oral therapy with β-methyl-digoxin steady state glycoside concentrations were compared in a cross-over study of intravenous maintenance therapy with Lanitop® ampoules or oral treatment with Lanitop® tablets. For a standard daily dose of 0.2 mg β-methyl-digoxin the serum concentrations were 1.35±0.10 ng/ml during both intravenous and oral administration. The intra-individual variation in glycoside concentration after changing from intravenous to oral maintenance therapy, or vice versa, was about the same as during continued intravenous or oral administration. It is concluded that the rate of rise of serum concentration after a single dose may be a useful indicator of the rate of absorption, but that the area under the serum concentration/time curve and the urinary glycoside excretion up to 32 h are unsuitable for determining equivalent doses of different formulations or routes of administration of digitalis glycosides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561665
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  • 4
    Electronic Resource
    Electronic Resource
    Metabolism of digitoxin in man and its modification by spironolactone (1976)
    Springer
    European journal of clinical pharmacology 9 (1976), S. 345-354 
    Details
    ISSN: 1432-1041
    Keywords: 3H-digitoxin ; metabolism ; spironolactone ; enzyme induction ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effect of spironolactone on the metabolism of intravenously administered3H-digitoxin (80 µCi) was investigated in eight patients. In three of them the labelled glycoside was given on a second occasion after spironolactone treatment had been discontinued for at least 65 days. Of total urinary radioactivity 79 % was unaltered drug and 12 % consisted of water soluble compounds. No digitoxigenin or digoxigenin and only trace amounts (〈2 %) of digoxin and the bis- and monoglycosides of digoxigenin were found. After spironolactone total urinary radioactivity was unchanged but the fraction eliminated as unchanged digitoxin fell from 79 to 66 % and the water soluble compounds increased from 12 to 26 % (p〈0.05). In addition spironolactone caused a 20 % reduction in the half-life of serum radioactivity (p〈0.01) and a 16 % reduction in the volume of distribution (p〈0.05). Induction of hepatic enzymes by spironolactone is proposed to explain the alteration in the metabolism of digitoxin in man. Both the altered metabolic pattern and the reduction in the volume of distribution appear to contribute to the reduction in half-life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00606547
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  • 5
    Electronic Resource
    Electronic Resource
    Some aspects of the intestinal absorption of zinc in man (1976)
    Springer
    European journal of clinical pharmacology 9 (1976), S. 423-428 
    Details
    ISSN: 1432-1041
    Keywords: Serum zinc concentration ; intestinal absorption ; portal vein ; transumbilical catheterization ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Serum zinc concentrations in peripheral venous blood were determined in 8 healthy volunteers at various times after oral administration of 50 mg Zn++. The same dose was given to 6 patients surgically treated for obesity by jejuno-ileostomy. In the healthy volunteers the mean serum zinc concentration before dosing was 0.89 µg/ml and a mean peak concentration of 2.39 µg/ml was found after 3 h. In the patients the starting level was lower, 0.67 µg/ml, and a mean peak concentration of 1.31 µg/ml was found 90 min after treatment. In the patients the areas under the serum concentration-time curve was approximately 1/3 of that in the healthy subjects. Zn++ 50 mg was also given to 3 patients undergoing transumbilical catheterization of the portal vein for diagnostic purposes and serum zinc concentrations were measured in portal and peripheral venous blood sampled simultaneously. No significant differences were found between the concentration of zinc in portal and peripheral venous blood during absorption, which suggests slow passage of zinc across the intestinal wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00606559
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  • 6
    Electronic Resource
    Electronic Resource
    Clinical pharmacokinetics of sisomicin: Two-compartment model analysis of serum data after I.V. and I.M. administration (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 251-256 
    Details
    ISSN: 1432-1041
    Keywords: Sisomicin ; pharmacokinetics ; bioavailability ; two-compartment analysis ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of sisomicin, a new single component aminoglycoside antibiotic related to gentamicin c1a, were determined in four healthy volunteers after intravenous and intramuscular administration of a 1 mg/kg dose. The elimination profile of this antibiotic follows two-compartment model kinetics after I.V. administration. The fast (α) and slow (β) disposition rate constants averaged 0.072 and 0.004 min−1, respectively. The volume of distribution at the steady-state averaged 0.185 liters/kg which approximately corresponds to the volume of extracellular space. The physiological availability of an intramuscular dose appeared to be complete. A method of administration adapted to the kinetic properties of the drug is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558337
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  • 7
    Electronic Resource
    Electronic Resource
    Double-blind crossover study of the effect of acetylsalicylic acid on bleeding and post-operative course after bilateral oral surgery (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 217-225 
    Details
    ISSN: 1432-1041
    Keywords: Acetylsalicylic acid ; surgery ; man ; bleeding ; pain ; wound-healing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Acetylsalicylic acid (ASA) was tested against placebo in a double-blind crossover study, in which essentially the same operation was performed twice on 23 healthy patients who required surgical removal of bilateral “identically” impacted wisdom teeth. On the evening before one operation they received ASA 1.0 g (Globentyl®) followed by ASA 2.0 g daily for the next 3 days, and at the other operation placebo tablets. A number of objective and subjective parameters were recorded for paired comparison of the pre-, per-, and post-operative courses, including bleeding, pain, wound-healing, and preference. Tests of platelet aggregation before each operation indicated whether or not ASA had been taken. Pre-operative bleeding time was significantly increased (from 4.4 to 6.9 min) by ASA, as well as the per-operative blood loss (about 30%), and the post-operative bleeding tendency. Episodes of profuse post-operative haemorrhage were reported by 5 patients, always after the operation for which ASA had been given. ASA also significantly promoted the occurrence of ecchymosis and haematoma. The pre-operative bleeding time was not a reliable predictor for these complications. The drug was very well tolerated with respect to side effects such as abdominal discomfort. The post-operative pain scores were neither reduced nor increased significantly by ASA, and the preference scores were not in favour of the drug. The present patients were all young and denied any previous bleeding disorders; nevertheless, ASA resulted in post-operative haemorrhage, ecchymosis and haematoma formation in several cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558332
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  • 8
    Electronic Resource
    Electronic Resource
    Pharmacokinetics and bioavailability of indoprofen in man (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 257-262 
    Details
    ISSN: 1432-1041
    Keywords: Anti-inflammatory and analgesic drug ; indoprofen ; pharmacokinetics ; bioavailability ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In a pharmacokinetic study of the new analgesic and anti-inflammatory drug indoprofen, plasma levels and urinary excretion were determined in four healthy volunteers after 100 mg and 200 mg iv, and after 100 mg (capsules) and 200 mg (tablets) oral doses. After iv administration, the mean biological half-life (t1/2 β) was about 2 h (range 1.4 to 3.2 h). The apparent volume of distribution Vdβ ranged between 11 to 17 % of body weight, indicating its limited extravascular distribution. Most of the drug was excreted in urine as glucuronide and a smaller proportion as unchanged indoprofen: the 24 h urinary excretion of these compounds accounted for 67 to 95 % of an iv dose. Peak plasma levels occurred between 30 and 120 minutes after oral administration of 100 mg as capsules or 200 mg as tablets. The mean biological half-life was about 2 h, as after iv administration. The bioavailability of oral doses was assessed using both plasma levels and urinary excretion data. The absorption of capsules and tablets was practically complete, that of the former being faster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558338
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  • 9
    Electronic Resource
    Electronic Resource
    Inhibition of tetracycline absorption by zinc (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 59-62 
    Details
    ISSN: 1432-1041
    Keywords: Tetracycline absorption ; zinc sulphate ; zinc citrate ; complex formation ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The inhibitory effect of zinc on the gastrointestinal absorption of tetracycline has been investigated in 7 healthy volunteers. Zinc (45 mg Zn++) was given as a solution of zinc sulphate and as a zinc citrate complex; tetracycline (500 mg) was administered as a commercially available preparation. Serum tetracycline concentrations and the area under the serum tetracycline concentration-time curve (up to 6 h) were significantly reduced when tetracycline was taken with either zinc sulphate or the zinc citrate complex. Although the reduction of absorption seemed more pronounced after zinc sulphate, the difference between the inhibitory effects of the two forms of zinc was not significant. It is concluded that simultaneous administration of zinc and tetracycline may reduce absorption of tetracycline.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561551
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of analgesic agents on emptying of the gallbladder in man (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 127-131 
    Details
    ISSN: 1432-1041
    Keywords: Gallbladder emptying ; analgesics ; indoprofen ; pentazocine ; morphine ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A controlled study of the clinical pharmacology of the biliary tract has been made. The rate of gallbladder emptying induced by a fatty meal was taken as a parameter for assessment of the inhibitory effect of indoprofen, a new analgesic-anti-inflammatory drug, pentazocine and morphine. The compounds were administered as single doses by iv (indoprofen and pentazocine) or im (morphine) injection. Indoprofen up to 400 mg had no effect, whereas morphine and pentazocine exerted a significant inhibitory effect on emptying of the gallbladder. Adverse reactions of clinical significance were associated with morphine and pentazocine, but were negligible with indoprofen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609471
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  • 11
    Electronic Resource
    Electronic Resource
    Plasma dopamine-β-hydroxylase activity and the pressor effect of dopamine infusion in man (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 197-200 
    Details
    ISSN: 1432-1041
    Keywords: Dopamine-β-hydroxylase ; dopamine infusion ; blood pressure ; plasma ; man ; inter-individual variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In order to study the function of dopamine-β-hydroxylase (DBH) in human plasma, dopamine, its natural substrate, was infused intravenously in 22 healthy volunteers. Their plasma DBH activities showed great interindividual variations (31–301 units/ml). The infusion rates of dopamine required to increase systolic blood pressure (BP) by 30 mm Hg differed considerably between the subjects, and ranged from 3,0 to 11,6 µg/kg/min. No correlation could be shown between the various dopamine doses and individual plasma levels of DBH. It was concluded, therefore, that plasma DBH in the blood stream was enzymatically inactive. Experiments with human plasma DBH in vitro also support this interpretation. Consequently, interindividual differences in the effects on BP during dopamine infusion cannot be due to pressor effects of noradrenaline synthesized by plasma DBH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00558329
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  • 12
    Electronic Resource
    Electronic Resource
    The fate of3H-terbutaline sulphate administered to man as an aerosol (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 1-7 
    Details
    ISSN: 1432-1041
    Keywords: 3H-terbutaline sulphate ; aerosol ; man ; absorption ; excretion ; spirometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Six asthmatic patients and two healthy volunteers inhaled tritiated terbutaline sulphate delivered by a pressurized aerosol inhaler. Spirometric measurements were performed and the amounts of total radioactivity in plasma, urine and faeces were determined. The analysis of urine included determination of radioactivity due to metabolized drug. Depending on the amount of drug inhaled the peak plasma level varied from undetectable to 3.8 ng/ml. An early plasma peak was found in 7 out of 8 subjects. The main plasma peaks were observed 1 – 6 hours after administration. The results of urinalysis showed a metabolic profile similar to that after parenteral administration. Disregarding the amount of inhaled drug and sampling time, 3 – 35% of the delivered drug was recovered in the urine and 2 – 37% in the faeces. Immediately after treatment 4 subjects rinsed their mouths with water and it was found to contain 14.5 – 50% of the delivered dose. The adapters from the aerosol canisters contained 14 – 27.5% of the delivered dose of drug.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561542
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  • 13
    Electronic Resource
    Electronic Resource
    Clinical efficacy of BS 100-141 in essential hypertension (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 69-72 
    Details
    ISSN: 1432-1041
    Keywords: BS 100-141 ; N-amidino-2-(2,6-dichlorphenyl)acetamide hydrochloride ; essential hypertension ; antihypertensive agent ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The antihypertensive effect of the guanidine derivative BS 100-141 (N-amidino-2-(2,6-dichlorphenyl)acetamide hydrochloride) has been studied in 11 hospitalized patients suffering from essential hypertension (WHO grade I – II). BS 100-141 1 mg tid was given in the first week and a larger dose in the second week. Mean 24-hour systolic and diastolic blood pressures were significantly lower at the end of the first and second weeks of active treatment than at the end of the placebo-week. The antihypertensive effect of BS 100-141 was stronger in the standing than in the supine position. It significantly reduced the heart rate. Treatment with BS 100-141 was well tolerated, although tiredness and dryness of the mouth appeared more often than during the placebo period. Extensive laboratory tests did not reveal any toxic effect on the liver, kidneys or haemopoietic tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561553
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  • 14
    Electronic Resource
    Electronic Resource
    Comparison of BS 100-141 and clonidine as antihypertensive agents (1976)
    Springer
    European journal of clinical pharmacology 10 (1976), S. 73-76 
    Details
    ISSN: 1432-1041
    Keywords: BS 100-141 ; N-amidino-2-(2,6-dichlorphenyl) acetamide hydrochloride ; clonidine ; essential hypertension ; antihypertensive agents ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The antihypertensive effect and side effects of the guanidine derivative BS 100-141 (N-amidino-2-(2,6-dichlorphenyl) acetamide hydrochloride) and clonidine were compared in a single-blind, cross-over study. The study consisted of two active treatment periods of 6 weeks each, both preceded by a 2 week placebo period. Thirty ambulant, hypertensive patients, whose blood pressure was of WHO severity grades I – II, were admitted to the study, and the results are based on the 24 patients who completed it. In more than half the patients the optimal daily dose of BS 100-141 was 3 – 4 mg, and of clonidine 0.30 – 0.45 mg. An equally large and significant decrease in blood pressure was produced by both drugs. Both of them also caused bradycardia, but it was of no clinical significance. Both BS 100-141 and clonidine caused tiredness in about half the patients, but it diminished after a few weeks. Dryness of the mouth occurred in more than half the patients taking either drug, and it remained unchanged during the 6 weeks of treatment. A withdrawal syndrome was noted in one patient on discontinuation of clonidine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561554
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  • 15
    Electronic Resource
    Electronic Resource
    Spectrophotometric determination of palladium by means of 2-chlorophenothiazine (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 208-208 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Palladium mit 2-Chlorphenothiazin ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424116
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  • 16
    Electronic Resource
    Electronic Resource
    Mesityl oxide as an extractant for titanium(IV) as its thiocyanate complex (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 364-364 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Titan(IV) ; Spektralphotometrie ; Extraktion als Thiocyanat mit Mesityloxid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00429515
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  • 17
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    Spectrophotometric determination of traces of cobalt with 6-nitro-quinoxaline-2,3-dithiol (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 127-127 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Kobalt mit 6-Nitrochinoxalin-2,3-dithiol ; Spektralphotometrie ; Spuren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00432574
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  • 18
    Electronic Resource
    Electronic Resource
    Study of complexes involved in the determination of copper using 4-(2-Pyridylazo)resorcinol (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 285-286 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Kupfer mit 4-(2-Pyridylazo)-resorcin ; Spektralphotometrie ; Untersuchung der Komplexe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445642
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  • 19
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    Extraction and spectrophotometric determination of nickel with potassium ethyl xanthate (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 364-364 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Nickel mit Äthylxanthat ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00531103
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  • 20
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    Extraction and spectrophotometric determination of platinum(IV) with thiobenzhydrazide (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 143-143 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Platin(IV) mit Thiobenzhydrazid ; Spektralphotometrie ; Extraktion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624703
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  • 21
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    Spectrophotometric determination of DNA, RNA and protein matter (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 384-384 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Desoxyribonucleinsäure, Ribonucleinsäure, Protein ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00512691
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  • 22
    Electronic Resource
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    The convolution of Gaussian absorption curves (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 31-35 
    Details
    ISSN: 1618-2650
    Keywords: Spektralphotometrie ; Transformation Gaußscher Absorptionskurven
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary The convolution of Gaussian absorption curves using orthogonal polynomials has been studied. An absorption curve can usually be considered as a sum of Gaussian curves. The p2-convoluted log A versus λ curve is independent of concentration and path-length and the optimum coefficient can be used as an index of purity for absorbing compounds.
    Notes: Zusammenfassung Die Transformation von Gaußschen Absorptionskurven unter Verwendung von Orthogonalpolynomen wurde untersucht, denn in der Regel kann eine Absorptionskurve als Summe von Gauß-Kurven betrachtet werden. Der quadratische Polynomkoeffizient aus log A gegen λ ist unabhängig von Konzentration und Schichtdicke und kann als Reinheitsindex benutzt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00443775
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  • 23
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    Direct spectrophotometric determination of calcium and magnesium using SPADNS (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 47-47 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Calcium, Magnesium mit SPADNS ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00443780
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  • 24
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    Photometric determination of manganese(II) with cacotheline (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 141-141 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Mangan(II) mit Kakothelin ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00663325
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    Spectrophotometric determination of iron as a mixed thiocyanate-monooctyl-α-anilinobenzylphosphonate complex (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 220-220 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Eisen mit Thiocyanat und Monooctyl-α-anilinobenzylphosphonat ; Spektralphotometrie ; Mischkomplex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00564069
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  • 26
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    Spectrophotometric determination of Fe(II) and Co(II) with 7-nitroso-8-hydroxyquinoline-5-sulphonic acid (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 222-222 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Eisen(II), Kobalt(II) mit 7-Nitroso-8-hydroxychinolin-5-sulfonsäure ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00564071
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    Spectrophotometric determination of aromatic m-polynitro compounds using sodium borohydride (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 278 (1976), S. 367-367 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Polynitroverbindungen mit Borhydrid ; Spektralphotometrie ; aromatische m-Polynitroverbindungen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00531106
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  • 28
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    Organische kobalt(II)-Chelate als analytische Hilfsmittel zur photometrischen Bestimmung des pO2 (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 167-168 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Sauerstoff, Partialdruck ; Spektralphotometrie ; org. Kobaltchelate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440834
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    Spectrophotometric determination of methylene blue (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 208-208 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Methylenblau ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424117
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  • 30
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    Spectrophotometric determination of palladium(II) and platinum(IV) in presence of each other by α-benzoin oxime (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 207-207 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Palladium neben Platin mit α-Benzoinoxim ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424115
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    Spectrophotometric determination of platinum(IV) Using dithio-oxamide as a reagent (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 280 (1976), S. 29-29 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Platin(IV) mit Dithiooxamid ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00443544
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    Application of factor analysis and simplex technique to the optimization of a phosphate determination via molybdenum blue (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 280 (1976), S. 21-23 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Phosphat über Molybdänblau ; Spektralphotometrie ; Optimierung des Verfahrens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary This article discusses the optimization of a phosphate analysis via molybdenum blue, using both factor analysis and the simplex technique. As a result of this study, a final recommended procedure for the photometric determination of phosphate has been given.
    Notes: Zusammenfassung Zur Optimierung einer photometrischen Methode zur Phosphatbestimmung werden die genannten Methoden diskutiert und als Ergebnis der Untersuchung eine endgültige Arbeitsweise vorgeschlagen.
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    URL: http://dx.doi.org/10.1007/BF00443542
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    Extraction-photometric determination of titanium(IV) with benzohydroxamic acid (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 280 (1976), S. 30-30 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Titan(IV) mit Benzhydroxamsäure ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00443545
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    Langzeitversuche zur Reproduzierbarkeit von Jodbestimmungen in Bewuchsproben nach der Sandell-Kolthoff-Reaktion (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 141-141 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Jod in Pflanzenmaterial ; Spektralphotometrie ; Sandell-Kolthoff-Reaktion, Langzeitversuche
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624701
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    Extraction-spectrophotometric determination of iron(III) by means of quinaldic acid-N-oxide (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 361-364 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Eisen(III) mit Chinaldinsäure-N-oxid ; Spektralphotometrie ; Extraktion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A simple and sensitive method for the determination of iron(III) is described. It is based on the extraction of the yellow-coloured complex of iron with quinaldic acid-N-oxide in chloroform. The absorption maximum is at 380 nm with molar absorptivity ε 380=1.03 · 104. Beer's Law is obeyed over the range 0.6–6 ppm iron with relative standard deviation of +-0.3% (Sandell sensitivity 0.005 μg/ml/cm2). The absorbance of the reagent blank is however high with consequent occasional disturbances, which are avoided when measured at 395 nm; molar absorptivity ε 395=7.4 · 103; effective concentration range 3–8 ppm iron with relative standard deviation +-0.5% (Sandell sensitivity 0.008μg/ml/cm2). A fairly large number of common ions do not interfere. Job's method of continuous variations and Asmus method indicate a iron-reagent ratio of 1∶3. Heterogeneous formation constant is K D =2 · 108.
    Notes: Zusammenfassung Die einfache und empfindliche Bestimmung beruht auf der Extraktion des gelben Komplexes von Eisen(III) mit Chinaldinsäure-N-oxid in Chloroform. Das Absorptionsmaximum liegt bei 380 nm mit dem molaren Extinktionskoeffizient ε 380=1.03 · 104. Das Beersche Gesetz gilt im Bereich 0,6–6 ppm Eisen. Die relative Standardabweichung beträgt+-0,3% (Sandell-Empfindlichkeit 0,005μg/ml/cm2). Die Absorption der Blindprobe ist jedoch hoch und verursacht manchmal Störungen, die beim Messen bei 395 nm vermieden werden; molarer Extinktionskoeffizient ε 395= 7,4 · 103; im Konzentrationsbereich 3–8 ppm Eisen beträgt die relative Standardabweichung+-0,5% (Sandell-Empfindlichkeit 0,008μg/ml/cm2). Eine ziemlich große Zahl von Fremdionen bewirkt keine Störung. Methoden nach Job und Asmus liefern ein Verhältnis Eisen/Reagens wie 1∶3. Die heterogene Bildungskonstante beträgt K D =2 · 108.
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    Spectrophotometric determination of some steroid sex-hormones (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 281 (1976), S. 371-377 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Östrogenen, Androgenen, Sexualhormonen ; Spektralphotometrie ; Reaktion mit Schwefelsäure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A detailed spectrophotometric study of the reaction of estrogens and androgens with 98% sulphuric acid at 20° C and of the effect of various dilutions with water on the nature of the spectra is presented. Dilution of the androgens-acid and estrogens-acid solutions with water to 40% and 80% v/v acid, respectively, increases the absorption intensity 3 to 11 times. The optimum conditions for determination of down to 2μg/ml of estrone, estradiol, ethinylestradiol, testosterone, and rostanalone and progesterone are reported. The results show a relative standard deviation of +-1.5 %.
    Notes: Zusammenfassung Die Reaktion der Östrogene und Androgene mit 98%iger Schwefelsäure bei 20° C und der Einfluß von Verdünnungen. mit Wasser auf die Art der Spektren wurden eingehend untersucht. Verdünnungen auf einen Säuregehalt von 40% und 80% bewirken eine 3–11fache Zunahme der Absorption. Die optimalen Bedingungen zur Bestimmung von 〉2μg/ml Östron, Östradiol, Äthinylöstradiol, Testosteron, Androstanalon und Progesteron wurden ausgearbeitet. Die relative Standardabweichung beträgt+-1,5%.
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    URL: http://dx.doi.org/10.1007/BF00512688
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    Indirect spectrophotometric determination of thallium(I) (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 48-48 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Thallium(I) ; Spektralphotometrie ; indirekt mit Lucigenin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00443782
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    Spectrophotometric determination of vanadate, chromate and tungstate using triphenylmethane dyes (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 140-140 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Vanadat, Chromat, Wolframat mit Triphenylmethanfarbstoffen ; Spektralphotometrie ; Kristallviolett, Malachitgrün, Fuchsin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00663324
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  • 39
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    Trifluoperazine dihydrochloride as a new reagent for the spectrophotometric determination of osmium(VIII) (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 141-141 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Osmium(VIII) mit Trifluoperazin ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00663326
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    Spectrophotometric determination of micro-amounts of ethylene glycol in propylene glycol (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 143-143 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Äthylenglykol in Propylenglykol ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00663328
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    Spectrophotometric determination of copper with tetraethylenepentamine or triethylenetetramine (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 218-218 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Kupfer mit Tetraäthylenpentamin oder Triäthylentetramin ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00564066
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  • 42
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    Spectrophotometric determination of iron(II) and cobalt(II) with 2,4-dihydroxy-3-nitrosopyridine (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 221-221 
    Details
    ISSN: 1618-2650
    Keywords: Best, von Eisen(II), Kobalt(II) mit 2,4-Dihydroxy-3-nitrosopyridin ; Spektralphotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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    URL: http://dx.doi.org/10.1007/BF00564070
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    Extraktionsspektralphotometrische Spurenbestimmung von Vanadium in konz. Natriumchlorid-Lösung (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 462-462 
    Details
    ISSN: 1618-2650
    Keywords: Bestimmung von Vanadium ; Extraktion ; Spektralphotometrie ; Elektrolysegifte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424412
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  • 44
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    Extraktions-photometrische Bestimmung von Phosphor in zinnhaltigen Kupferlegierungen (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 282 (1976), S. 460-461 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Phosphor in Kupferlegierungen ; Spektralphotometrie ; Sn-haltige Cu-Legierungen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424411
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