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首页> 外文期刊>E3S Web of Conferences >Application of Isotope Dilution Mass Spectrometry for Reference Measurements of Cadmium. Copper, Mercury, Lead, Zinc and Methyl Mercury in Marine Sediment Sample
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Application of Isotope Dilution Mass Spectrometry for Reference Measurements of Cadmium. Copper, Mercury, Lead, Zinc and Methyl Mercury in Marine Sediment Sample

机译：同位素稀释质谱法在镉参考测量中的应用。海洋沉积物中的铜，汞，铅，锌和甲基汞

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Marine sediment was selected as a test sample for the laboratory inter-comparison studies organized by the Environment Laboratoryes of the International Atomic Energy. The analytical procedure to establish the reference values for the Cd, Cu, Hg, Methyl Hg, Pb and Zn amount contents was based on Isotope Dilution Inductively Coupled Plasma-Mass Spectrometry (ID ICP-MS applied as a primary method of measurement..The Hg and Methyl Hg determination will be detailed more specifically because of the problems encountered with this element, including sample homogeneity issues, memory effects and possible matrix effects during the ICP- MS measurement stage. Reference values, traceable to the SI, with total uncertainties of less than 2% relative expanded uncertainty (k=2) were obtained for Cd, Cu, Zn and Pb and around 5% for Hg and CH3Hg.Key words: ID ICP-MS / cadmium / copper / lead / zinc / mercury / methyl mercury / sediment sample / uncertainty / traceability / validation
机译：海洋沉积物被选为国际原子能环境实验室组织的实验室比对研究的测试样品。以同位素稀释电感耦合等离子体质谱法（ID ICP-MS为主要测量方法）为基础，建立Cd，Cu，Hg，甲基Hg，Pb和Zn含量含量参考值的分析程序。汞和甲基汞的测定将更加详细，因为该元素遇到的问题包括ICP-MS测量阶段中的样品均一性问题，记忆效应和可能的基质效应，可追溯至SI的参考值，总不确定度为Cd，Cu，Zn和Pb的相对扩展不确定度（k = 2）小于2％，Hg和CH3Hg的相对扩展不确定度约5％。关键字：ICP-MS /镉/铜/铅/锌/汞/甲基汞/沉积物样品/不确定度/可追溯性/验证

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