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Related Experiment Videos

Cadmium analysis by radiochemical neutron activation analysis.

R R Greenberg, M Gallorini, T E Gills

    Environmental Health Perspectives
    |February 1, 1979
    PubMed
    Summary

    Radiochemical neutron activation analysis (RNAA) effectively quantifies cadmium (Cd) in environmental samples using solvent extraction. A sequential extraction method using bismuth diethyldithiocarbamate and zinc diethyldithiocarbamate ensures accurate Cd measurement by removing interfering copper (Cu).

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    Analytical and bioanalytical chemistry·2007

    Area of Science:

    • Analytical Chemistry
    • Environmental Science
    • Nuclear Chemistry

    Background:

    • Radiochemical neutron activation analysis (RNAA) is a standard technique for analyzing cadmium (Cd) in environmental samples.
    • Solvent extraction is the primary method for separating Cd from other neutron-activated species.
    • Zinc diethyldithiocarbamate [Zn(DDC)2] in chloroform effectively extracts Cd across a wide pH range (1-12).

    Purpose of the Study:

    • To detail a robust radiochemical separation procedure for cadmium (Cd) analysis.
    • To address and overcome interference from copper (Cu) during Cd determination.
    • To present a versatile method applicable to multi-element analysis schemes.

    Main Methods:

    • Quantitative solvent extraction of Cd using zinc diethyldithiocarbamate [Zn(DDC)2] in chloroform.

    Related Experiment Videos

  • A sequential extraction strategy employing bismuth diethyldithiocarbamate [Bi(DDC)3] to remove interfering copper (Cu) prior to Cd extraction.
  • Integration with an inorganic ion exchanger, Hydrated Manganese Dioxide (HMD), for pre-concentration and removal of As, Sb, Se, and Cr.

    • Main Results:

    • The Zn(DDC)2 method provides quantitative Cd extraction from pH 1 to 12.
    • The sequential extraction effectively removes Cu, preventing interference and allowing for its simultaneous determination.
    • The combined method, including HMD, is effective for complex multi-element environmental sample analysis.

    Conclusions:

    • A versatile two-step solvent extraction procedure using Bi(DDC)3 and Zn(DDC)2 enables accurate Cd and Cu determination via RNAA.
    • This method is highly effective for analyzing environmentally relevant matrices, even in the presence of other elements.
    • The technique is adaptable for broader multi-element analysis, enhancing its utility in environmental monitoring.