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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Determination of Cadmium, Copper, Lead, Nickel, and Zinc in Sediments by ID-ICP/MS

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.3, pp.297-303
Cho, Kyung-Haeng
Park, Chang-Joon
Suh, Jung-Kee
Han, Myoung-Sub
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Abstract

Isotope-dilution inductively coupled plasma mass spectrometry was used to determine trace amounts of Cd, Cu, Pb, Ni and Zn in sediment. Sediment samples were dissolved by microwave digestion with addition of mixed acid (<TEX>$HNO_3$</TEX>, HF and <TEX>$HClO_4$</TEX>). Lead was determined after separation of alkaline and alkaline earth metals by an ammonium pyrrolidenedithiocarbarmate (APDC) solvent extraction. The other elements were determined after separation of iron, tin and titanium by hydroxide precipitation. Recovery efficiency of the analyte elements was not satisfactory, but most of matrix elements causing the isobaric interference could be effectively eliminated by the separation. Good agreement was achieved with the certified values in the analysis of the two sediment reference materials.

keywords
Sediment, Isotope dilution, ICP-MS, Matrix separation, Trace elements


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