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  • Chemistry  (110)
  • General Chemistry  (21)
  • Organic Chemistry  (13)
  • Heavy metals  (2)
  • Brassicaceae
  • pollen analytical standard techniques
  • R/V Vereshchagin
  • 1
    Electronic Resource
    Electronic Resource
    Determination of inorganic and organic traces in the clean room compartment of Antarctica
    Amsterdam : Elsevier
    Analytica Chimica Acta 283 (1993), S. 230-245 
    Details
    ISSN: 0003-2670
    Keywords: Biogenic halogenated methanes ; Gas chromatography ; Halogens ; Heavy metals ; Iodine cycle ; Ion chromatography ; Isotope dilution analysis ; Mass spectrometry ; Nitrate cycle ; Trace detection
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0003-2670(93)85227-B
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  • 2
    Electronic Resource
    Electronic Resource
    Über den Mechanismus des Elektropolierens von Molybdän in nichtwäßrigen Elektrolyten (1974)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 25 (1974), S. 906-909 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Mechanism of the electropolishing of molybdenum in nonaqueous electrolytesMeasurements carried out on molybdenum electrodes in solutions of magnesium per-chlorate and lithium chloride in ethanol dimethylsulphoxide and dimethyl form-amide have shown that the metal can be electropolished in solutions containing perchlorate. The formal valency (nformal) of the molybdenum dissolution in the electropolishing region, as determined from the weight loss of the electrode and the charge transferred is 3≤n formal≤ 2,75.
    Notes: Es wurden Messungen an Molybdänelektroden in Lösungen von Magnesiumperchlorat und Lithiumchlorid in Äthanol, Dimethylsulfoxid und Dimethylformamid durchgeführt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19740251206
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  • 3
    Electronic Resource
    Electronic Resource
    Vergleich der aus Schmelze und Lösung gewonnenen intermetallischen Verbindung AuCd3 (1932)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 209 (1932), S. 325-327 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Der beim Eintauchen von metallischem Cadmium in eine sehr verdünnte Lösung von Goldschlorid entstehende Niederschlag ist nicht nur in seiner Zusammensetzung, sondern auch in seiner röntgenographisch verglichenen Struktur identisch mit der intermetallischen, aus der Schmelze entstandenen Verbindung AuCd3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19322090316
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  • 4
    Electronic Resource
    Electronic Resource
    Ungeschützte gleichteilige Silberhydrosole. III (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 173 (1928), S. 27-44 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die bereits früher berichtete Beobachtung, daß die Reduktion von silberhaltigen Reduktionsgemischen ohne Verwendung von Gold-oder Silberkeimen durch Hydrazinhydrat je nach der Menge des dabei anwesenden Natriumcarbonats abgestufte Silbersole zu liefern vermag, wird erweitert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19281730104
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  • 5
    Electronic Resource
    Electronic Resource
    Das elektrokinetische Potential des Goldes in sehr verdünnten Elektrolytlösungen (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 181 (1929), S. 379-384 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Abhängigkeit des elektrokinetischen Potentials des Goldes von der Konzentration wird in sehr verdünnten Lösungen von Elektrolyten (10-8-10-5 n.) verfolgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291810135
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  • 6
    Electronic Resource
    Electronic Resource
    Die Herstellung schutzkolloidfreier, gleichteiliger Silberhydrosole I (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 164 (1927), S. 409-419 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Im Gegensatz zu den bekannten Silberhydrosolen mit vielfarbigen Submikronen kann man auch solche mit gleichfarbigen Teilchen herstellen und damit ähnliche Verhältnisse erreichen, wie bei kolloidem Gold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19271640137
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  • 7
    Electronic Resource
    Electronic Resource
    Beweglichkeit der Teilchen in Goldhydrosolen (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 148 (1925), S. 382-390 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. An Goldhydrosolen, die durch Reduktion gewonnen waren, sind die Beweglichkeiten der Goldteilchen im elektrischen Potentialgefälle unabhängig von dem Zerteilungsgrad und der Art der Darstellung.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251480136
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  • 8
    Electronic Resource
    Electronic Resource
    Die Herstellung schutzkolloidfreier, gleichteiliger Silberhydrosole. II (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 169 (1928), S. 140-150 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die für die Darstellung von gleichteiligen Silberhydrosolen besten Mengenverhältnisse werden zusammengestellt für das Arbeiten mit 0,001% iger Silberoxydlösung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19281690111
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  • 9
    Electronic Resource
    Electronic Resource
    Comparison of fast-atom bombardment, thermal ionization and inductively coupled plasma mass spectrometry for the measurement of 64Zn/67Zn stable isotopes in human nutrition studies (1989)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 3 (1989), S. 203-205 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Fast-atom bombardment, thermal ionization and inductively coupled plasma mass spectrometry are contrasted in comparative measurements of 64Zn/67Zn isotope ratios on samples isolated in the course of a human mineral-nutrition experiment. The data are evaluated with reference to the precision normally required in enriched stable-isotope mineral-nutrition studies, and the convenience of the mass spectrometric techniques is also compared.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290030610
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of heavy metals on growth and ultrastructure ofChara vulgaris (1987)
    Springer
    Protoplasma 136 (1987), S. 37-48 
    Details
    ISSN: 1615-6102
    Keywords: Chara ; Fine structure ; Growth ; Heavy metals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The toxicity of some heavy metals to the common macrophytic freshwater algaChara vulgaris was studied under laboratory conditions. For experiments, apical tips of algae containing two internodes were cultivated for fourteen days in the presence of various concentrations of cadmium, mercury or lead (as triethyl lead or lead nitrate). Fifty percent growth inhibition occurred with concentrations of 8.5×10−8 M (9.5 ppb) cadmium, 7.5×10−7M (150ppb) mercury, 1.6×10−6 M (330ppb) organic lead or 4× 10−5 M (8000 ppb) inorganic lead. Sublethal concentrations of these metals caused alterations in the fine structure of internodal cells which turned out to be at least partly metal-specific or in the case of lead, the effects depended on whether the lead was ionic or organically bound. Cadmium and inorganic lead induced disorders of cell wall microfibrils which resulted in local wall protuberances. Mercury affected the chloroplasts which mostly showed considerably increased grana stacks. In addition, mercury caused a dilation of the endoplasmic reticulum and of the mitochondrial tubuli. Organic lead damaged the membrane system of chloroplasts; sheet- or tubule-like thylakoids were disarranged and showed whorl-like structures. At higher concentrations of organic lead, tubular invaginations of the plasmalemma (“charasomes”) disappeared. The fine structure of nuclei was not altered by any of the metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276316
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