Direct high-precision measurements of the 87Sr/86Sr isotope ratio in natural water, carbonates and related materials by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS)

被引：99

作者：

Ehrlich, S

Gavrieli, I

Dor, LB

Halicz, L

机构：

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

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

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2001年 / 16卷 / 12期

关键词：

D O I：

10.1039/b107996b

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The present work presents a precise and accurate method for the determination of strontium isotope ratios (Sr-87/Sr-86) by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). Mass discrimination and instrument drift are corrected by the use of the natural constant Sr-86/Sr-88 ratio as an internal standard. The internal standard also corrects for matrix effects, allowing the direct analysis of natural water, carbonates and related materials without chemical separation. The precision (2 sigma) of the Sr-87/Sr-86 ratio is 0.002% (20 ppm), even in samples with total dissolved solid (TDS) levels of up to 500 mg L-1.

引用

页码：1389 / 1392

页数：4

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