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  • 1955-1959  (3)
  • 1925-1929  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Temperature Coefficient of γ-Ray Absorption (1927)
    [s.l.] : Nature Publishing Group
    Nature 119 (1927), S. 51-51 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECENT improvements in design and technique for a gold-leaf electrometer, details of which will be published shortly, have made it possible to apply the instrument with success to the problem of a possible temperature coefficient of γ-ray absorption. Preliminary measurements with lead as ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/119051b0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The gravimetric determination of nickel with dimethylglyoxime in the presence of copper (1959)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 165 (1959), S. 354-360 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A detailed investigation has been made of the gravimetric determination of nickel with dimethylglyoxime in the presence of copper. Copper interference is eliminated by precipitation in a solution containing tartrate and thiosulphate at a pH of 5.5–6.5. The solubility of the nickel dimethylglyoxime complex has been determined as a function of temperature, pH and alcohol concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00462358
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The photometric determination of Copper by extraction as the Diethyldithiocarbamate. Interferences and their Elimination (1956)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 153 (1956), S. 30-38 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Two procedures for the photometric determination of copper as the diethyldithiocarbamate complex have been investigated as to their selectivity. In the first procedure—extraction by chloroform from a citrate solution ofph about 8.5, containing EDTA—the following elements interfere: HgII, Ag, Au, Pt, Pd, Os, SbIII, TeIV, TlIII and Bi. Interference by HgII, Ag, Pd, SbIII, TeIV and TlIII can be prevented by simple measures. In the second procedure—extraction by a solution of lead diethyldithiocarbamate in chloroform from ammoniacal citrate-only Ag, TlIII, Bi and HgII interfere. Interference by the first three elements can be prevented easily, leaving as the only serious interference in this method mercury in amounts above 500 Μg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00463106
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The extraction of ferric chloride with methyl isobutyl ketone and amyl acetate (1958)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 160 (1958), S. 403-409 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The extraction of iron as ferric chloride in 7 M hydrochloric acid by a mixture of (1+1) or (2+1) methyl isobutyl ketone and amyl acetate is quantitative for macro as well as for micro amounts of iron. The distribution ratio is very high (∼ 4000). With these mixtures no emulsification difficulties are encountered as they are with methyl isobutyl ketone alone. The behaviour of 44 elements in this extraction has been investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00468563
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    Paper (German National Licenses)
    Fulltext
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