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  • 1980-1984  (14)
  • 1970-1974  (6)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Solvent extraction of scandium(III) (1980)
    s.l. : American Chemical Society
    Analytical chemistry 52 (1980), S. 2031-2033 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50063a010
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  • 2
    Electronic Resource
    Electronic Resource
    Liquid-liquid extraction of rhenium(VII) with mesityl oxide (1971)
    s.l. : American Chemical Society
    Analytical chemistry 43 (1971), S. 473-474 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60298a032
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  • 3
    Electronic Resource
    Electronic Resource
    Liquid-liquid extraction and spectrophotometric determination of palladium(II) and ruthenium (III) with isonitrosoethylbenzoylacetate (1980)
    Springer
    Microchimica acta 73 (1980), S. 353-360 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine Methode für die Extraktion und spektrophotometrische Bestimmung von Pd oder Ru mit IÄBA wurde beschrieben. Der gelbe Pd-Komplex absorbiert in chloroformischer Lösung bei 410 nm und entspricht dem Beerschen Gesetz für 10–110μg Pd/10 ml organische Phase. Der rote Ru-Komplex absorbiert in MIBK bei 500 nm und entspricht dem Beerschen Gesetz für 25–125μg Ru/10 ml. Das Verfahren eignet sich für die Bestimmung der beiden Metalle in Gegenwart zahlreicher Kationen und Anionen.
    Notes: Summary A method is described for the extractive spectrophotometric determination of palladium or ruthenium (III) using isonitrosoethylbenzoylacetate as the reagent. The yellow Pd-INEBA complex extracted into chloroform absorbs at 410 nm and conforms to Beer's law in the range of 10–110μg of Pd per 10 ml of organic phase. The purple Ru-INEBA complex extracted into MIBK absorbs at 500 nm and conforms to Beer's law in the range of 25–125μg of Ru per 10 ml of organic phase. The method affords the determination of both Pd and Ru in the presence of large number of cations and anions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196322
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  • 4
    Electronic Resource
    Electronic Resource
    p-chloro- and p-bromo-benzoylacetoneoxime as the spectrophotometric reagents for palladium and ruthenium(III) (1980)
    Springer
    Microchimica acta 74 (1980), S. 117-124 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein Verfahren zur extraktiv-spektrophotometrischen Bestimmung von Palladium und Ruthenium(III) mit p-Chlor- oder p-Brombenzoylacetonoxim wurde beschrieben. Die gelben Palladium-Komplexe werden bei pH 3,5 aus wäßriger Lösung mit Chloroform extrahiert, absorbieren bei 400 nm und entsprechen dem Beerschen Gesetz zwischen 10 und 100μg Pd/10 ml organischer Phase. Die orange-roten Ruthenium-Komplexe werden bei pH 5,0 aus wäßriger Lösung mit Äthylacetat extrahiert, absorbieren bei 475 nm und entsprechen zwischen 20 und 200μg Ru/10 ml organischer Phase dem Beerschen Gesetz. Über die molare Extinktion, die Empfindlichkeiten nach Sandell und die Instabilitätskonstanten wurde berichtet.
    Notes: Summary A procedure is described for the extractive spectrophotometric determination of palladium or ruthenium (III) usingp-chloro orp-bromobenzoylacetoneoxime as the reagent. The yellow palladium complexes which are extracted into chloroform from an aqueous solution of pH 3.5, absorb at 400 nm and conform to Beer's law in the range of 10 to 100μg of Pd/10 ml of organic phase. The orange-red ruthenium complexes which are extracted into ethylacetate from an aqueous solution of pH 5.0, absorbs at 475 nm and conforms to Beer's law in the range of 20 to 200μg of Ru/10 ml of organic phase. The molar absorptivities, Sandell's sensitivities and instability constants are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196492
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  • 5
    Electronic Resource
    Electronic Resource
    Liquid-liquid extraction and separation studies of uranium(vi) (1980)
    Springer
    Microchimica acta 74 (1980), S. 93-98 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Trennung des U(VI) von Fe(III), Mo(VI), V(V), Bi(III), Zr(IV) und Th(IV) läßt sich durch Flüssig-flüssig-Extraktion mit 4-Methyl-3-penten-2-on] (Mesityloxid, MeO) aus 0,1M Natriumsalicylat bei pH 6,0 durchführen. Die extrahierte Verbindung ist UO2(HO·C6H4COO)2·2MeO. Ein Verfahren zur Abtrennung von 50μg Uran von Milligrammengen der anderen Metalle wurde beschrieben.
    Notes: Summary Separation of uranium(VI) from iron(III), molybdenum(VI), vanadium (V), bismuth(III), zirconium(IV) and thorium(IV) is achieved by liquid-liquid extraction with 4-methyl-3-pentene-2-one (mesityl oxide; MeO) from sodium salicylate media (0.1M, pH 6.0). The extracted species is UO2(HO·C6H4COO)2·2MeO. A procedure for separating 50μg of uranium from mg amounts of the other metals is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196490
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  • 6
    Electronic Resource
    Electronic Resource
    Extraction and separation of bismuth(III) from steel and bismuth-base alloys (1984)
    Springer
    Microchimica acta 82 (1984), S. 63-67 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Wismut(III) läßt sich von Fe(III), Mo(VI), V(V), Cr(VI), Ti(IV), Sb(III), Pb(II), Be(II), U(VI), Hf(IV), In(III) und Zr(IV) durch Extraktion mit hochmolekularen Aminen aus Natriumsuccinat bei geeignetem pH trennen. Bi(III) wird dann von der organischen Phase getrennt und spektralphotometrisch bestimmt. Das Verfahren eignet sich für Wismutlegierungen.
    Notes: Summary Separation of bismuth(III) from iron(III), molybdenum(VI), vanadium(V), chromium(VI), titanium(IV), antimony(III), lead(II), beryllium(II), uranium(VI), hafnium(IV), indium(III) and zirconium (IV) is achieved by solvent extraction with high molecular weight amines from sodium succinate solution adjusted to suitable pH. Bismuth(III) is stripped from the organic phase and determined spectrophotometrically. The method is shown to be applicable to bismuth alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202162
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  • 7
    Electronic Resource
    Electronic Resource
    A new method for the solvent extraction separation and photometric determination of palladium (1974)
    Springer
    Microchimica acta 62 (1974), S. 853-858 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Tributylphosphat wurde zur Extraktion von Pd(II) aus bromwasserstoffsaurem Medium herangezogen und ein einfaches Verfahren zur Abtrennung des Pd von Fe(III), Co(II), Ni(II), Ru(III), Rh(III), Ir(III) und Pt(IV) daraus entwickelt. Die spektrophotometrische Bestimmung des Pd mit 1-Phenyl-2-thioharnstoff wurde beschrieben. Über den Einfluß der Acidität, der Lösungsmittel, der Reagenskonzentration und verschiedener Fremdionen wurde berichtet. Die Zusammensetzung des Komplexes entspricht wahrscheinlich dem Verhältnis 1∶1.
    Notes: Summary TBP has been used for the extraction of palladium(II) from hydrobromic acid medium and a simple extraction scheme developed for separation of palladium from Fe(III), Co(II), Ni(II), Ru(III), Rh(III), Ir(III), and Pt(IV). A spectrophotometric method is described for the determination of palladium with 1-phenyl-2-thiourea. The effects due to acidity, solvents, reagent concentration and diverse ions are reported. The complex is probably of 1 ∶ 1 composition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01218305
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  • 8
    Electronic Resource
    Electronic Resource
    Extraction of chromium(VI) with 4-methyl-3-pentene-2-one and subsequent photometric determination as diphenylcarbazide complex (1970)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 249 (1970), S. 239-241 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A rapid and sensitive method is developed for the solvent extraction of chromium(VI) with mesityl oxide. Chromium(VI) is extracted with pure mesityl oxide from 1 M HCl containing 2.5 M KCl as salting-out agent. The metal from the organic phase is stripped with dilute ammonia and determined photometrically as its dephenylcarbazide complex at 540 nm. Chromium(VI) can be extracted in presence of a large number of ions. Only 30 min are required for complete separation and determination. Average recovery was 98.6 ± 1.4%, the standard deviation ± 1.3% (14.9 μg of Cr).
    Notes: Zusammenfassung Chrom wird mit reinem Mesityloxid aus 1 M salzsaurer, 2,5 M KCl enthaltender Lösung extrahiert, mit Ammoniaklösung aus der organischen Phase entfernt und photometrisch als Diphenylcarbazidkomplex bei 540 nm bestimmt. Zahlreiche Fremdionen stören die Extraktion nicht. Für Abtrennung und Bestimmung werden 30 min benötigt. Im Durchschnitt wurden 98,6 ± 1,4 % wiedergefunden. Die Standard-abweichung betrug ± 1,3% (für 14,9 μg Cr).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00463171
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  • 9
    Electronic Resource
    Electronic Resource
    Liquid-liquid extraction of indium(III) from salicylate solution (1984)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 318 (1984), S. 612-612 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00529124
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  • 10
    Electronic Resource
    Electronic Resource
    Extraction of gadolinium with liquid ion-exchangers (1984)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 317 (1984), S. 792-792 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00493221
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