용매추출에 의한 매질제거와 동위원소희석 유도결합플라스마 질량분석법에 의한 침적토양표준물질중의 Cu, Zn 및Ni의 분석
Determination of Cu, Zn and Ni in Sediment Certified Reference Materials by Isotope Dillution-Inductively Coupled Plasma Mass Spectromy using Off-line Solvent Extraction
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Abstract
Isotope Dilution-Inductively Coupled Plasma Mass Spectrometry (ID-ICPMS) was applied to determine Cu, Zn and Ni in marine sediment PACS-2 and estuarine sediment NIST1646a. These materials contain high amounts of potential interferences such as Ca, Mg, P, S, and Cl. Therefore, an off-line solvent extraction with solvent extraction using ammonium pyrrolidinedithiocarbamate (APDC) as a chelate was employed to separate the metals from the sample matrix. Contamination from reagents and from the extraction procedure was minimal and precise results was obtained for these CRM materials. Microwave digestion method using HNO3/HF/ HClO4 media for the dissolution of solid sample was studied.
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