Isotope Dilution Inductively Coupled Plasma Mass Spectrometery for the Determination of Lead in Plants and Human Hair

Abstract

Abstract: Amethod of isotope dilution inductively coupled plasma mass spectrometry for the determination of lead in plant and human hair samples is established. The effects of instrumental parameters on the isotope ratio measurement were studied and discussed. For the precise determination, the data acquisition parameters were optimized. Tl was used as internal standard for the correction of mass bias and system driftment. The propagation of uncertainty in ID-ICP-MS was discussed to optimize the amount of concentrated isotope spiked. The analytical results of lead in some certificate reference materials agree well with the certificated valuesl.

Key words: Isotope ratio dilution, Inductively coupled plasma mass spectrometry, Lead

CLC Number:

O657.3

TrendMD:

YANG Chao-Yong, HUANG Zhi-Yong, ZHAO Li, ZHUANG Zhi-Xia, WANG Xiao-Ru. Isotope Dilution Inductively Coupled Plasma Mass Spectrometery for the Determination of Lead in Plants and Human Hair[J]. Chem. J. Chinese Universities, 2002, 23(9): 1688.

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Isotope Dilution Inductively Coupled Plasma Mass Spectrometery for the Determination of Lead in Plants and Human Hair

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