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  • 1955-1959  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Amperometric determination of cadmium by ferrocyanide:Corrigendum (1956)
    Springer
    Naturwissenschaften 43 (1956), S. 325-325 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629387
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Amperometric determination of cadmium by ferrocyanide (1956)
    Springer
    Naturwissenschaften 43 (1956), S. 197-197 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00632945
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preliminary investigations on the nature of the capacity peaks observed with organic compounds at the dropping mercury electrode in pulsating field (1959)
    Springer
    Colloid & polymer science 163 (1959), S. 136-138 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Vorläufige Untersuchungen zur Feststellung der Natur der Kapazitätspitzen, die mit organischen Verbindungen bei der tropfenden Quecksilber-Elektrode im Wechselfeld gefunden wurden, lassen eine Klassifizierung zu in solche, die durch Desorption verursacht werden, und solche, die chemisch durch Reaktionen bedingt sind.
    Notes: Summary Preliminary investigations have been made for determining the nature of the capacity peaks observed with organic compounds at the dropping mercury electrode in pulsating field. The peaks have been broadly classified into those caused by (1) desorption and those caused by (2) chemical reaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01510572
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Use of o-cresotic acid as a reagent for the estimation of thorium and zirconium (1959)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 169 (1959), S. 254-257 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Thorium as well as zirconium are quantitatively precipitated by o-cresotic acid at pH 3.7 and above. The precipitate in both the cases can be ignited and weighed as oxide. In the case of thorium, the precipitate can also be weighed directly as ThC8H14O8 after drying at 105–110
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00448593
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Complex Formation between Magnesium Borate and Boric Acid (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 299 (1959), S. 170-173 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Leitfähigkeit und die Gefrierpunktserniedrigung einer Reihe von Lösungen wurde bestimmt, die eine gegebene Menge Borsäure und wechselnde Mengen von Magnesiumborat enthalten. Die Meßwerte deuten auf das Vorliegen folgender drei Verbindungen hin: MgO · 4 B2O3 · 9 H2O, MgO · 3 B2O3 · 6 H2O und 2 MgO · 3 B2O3 · 3 H2O. Quantitative Analysen der ausgefallenen Verbindungen bestätigen diese Formeln. Magnesiummetaborate bilden mit verschiedenen Ammoniumsalzen lösliche Komplexe.
    Notes: Conductivity and depression in freezing point of a series of solutions containing a fixed amount of boric acid and varying quantities of magnesium borate have been determined. The values obtained indicate the formation of -three possible compounds: MgO · 4 B2O3 · 9 H2O, MgO · 3 B2O3 · 6 H2O and 2 MgO · 3 B2O3 · 3 H2O. The results have been confirmed by quantitative estimation of magnesium and B2O3 in the precipitates obtained from solutions corresponding to the above mentioned complexes.It has also been observed that magnesium metaborate forms soluble complexes with a number of ammonium salts, the detailed results of which will be communicated later.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19592990309
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  • 6
    Electronic Resource
    Electronic Resource
    Reduction of Selenous Acid with Carboxylic Acids (1957)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 4 (1957), S. 319-323 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es wird über die Reduktion von seleniger Säure durch Karbonsäuren in Gegenwart von Kaliumpermanganat und Salzsäure berichtet. Die Versuchstemperaturen liegen bei 50 und 70° C. Es wird festgestellt, daß die Reduktion analog der von Goldchlorid verläuft.
    Notes: Reduction of selenous acid by certain carboxylic acids in presence of small quantities of KMnO4 has been studied. The observed enhanced reducing power of the carboxylic acids treated with KMnO4 towards selenous acid has been explained as being due to the formation of intermediate oxidation products of varying degree of stability, which strongly reduce selenous acid. In a few cases the presence of definite oxidation products has been indirectly proved. The results obtained are, in general, similar to those of gold chloride-carboxylic acid reactions studied by MACMAHON and SRIVASTAVA.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19570040511
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    Paper (German National Licenses)
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