High precision lead isotope ratio measurements by multicollector-ICP-MS in variable matrices

被引：28

作者：

Ehrlich, S

Karpas, Z

Ben-Dor, L

Halicz, L

机构：

[1] Geol Survey Israel, IL-95501 Jerusalem, Israel

[2] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel

[3] Hebrew Univ Jerusalem, Dept Inorgan & Analyt Chem, IL-91904 Jerusalem, Israel

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2001年 / 16卷 / 09期

关键词：

D O I：

10.1039/b102454j

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

It is well known that the use of thallium as an internal standard for high precision and high accuracy measurement of lead isotopic ratios can correct for mass discrimination and instrumental drift. The present work demonstrates that matrix effects can also be accounted for when a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) is used. The precision (2 sigma) obtained for the Pb-207/Pb-206 and Pb-208/Pb-206 ratios was 30 and 40 ppm, respectively, even in samples with total dissolved solid (TDS) levels of up to 700 mg L-1.

引用

页码：975 / 977

页数：3

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