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

동위원소희석 질량분석법에 의한 저니토 중의 카드뮴, 구리, 납, 니켈, 아연의 정량

  • Cho, Kyung-Haeng (Division of Chemical Metrology and Material Evaluation, Korea Research Institute of Standards and Science) ;
  • Park, Chang-Joon (Division of Chemical Metrology and Material Evaluation, Korea Research Institute of Standards and Science) ;
  • Suh, Jung-Kee (Division of Chemical Metrology and Material Evaluation, Korea Research Institute of Standards and Science) ;
  • Han, Myoung-Sub (Division of Chemical Metrology and Material Evaluation, Korea Research Institute of Standards and Science)
  • 조경행 (한국표준과학연구원 물질량표준부) ;
  • 박창준 (한국표준과학연구원 물질량표준부) ;
  • 서정기 (한국표준과학연구원 물질량표준부) ;
  • 한명섭 (한국표준과학연구원 물질량표준부)
  • Received : 2000.02.24
  • Published : 2000.06.25

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 ($HNO_3$, HF and $HClO_4$). 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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