Precise, small sample size determinations of lithium isotopic compositions of geological reference materials and modern seawater by MC-ICP-MS

被引：166

作者：

Jeffcoate, AB

Elliott, T

Thomas, A

Bouman, C

机构：

[1] Univ Bristol, Dept Earth Sci, Bristol BS8 1RJ, Avon, England

[2] Dept Earth Sci, Oxford OX1 3PR, England

[3] ThermoFinnigan MAT, Bremen, Germany

来源：

GEOSTANDARDS AND GEOANALYTICAL RESEARCH | 2004年 / 28卷 / 01期

关键词：

Li isotopic composition; silicate reference materials; seawater; MC-ICP-MS; Li standard;

D O I：

10.1111/j.1751-908X.2004.tb01053.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Li isotope ratios of four international rock reference materials, USGS BHVO-2, GSJ JB-2, JG-2, JA-1 and modern seawater (Mediterranean, Pacific and North Atlantic) were determined using multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). These reference materials of natural samples were chosen to span a considerable range in Li isotope ratios and cover several different matrices in order to provide a useful benchmark for future studies. Our new analytical technique achieves significantly higher precision and reproducibility (< +/- 0.3parts per thousand 2s) than previous methods, with the additional advantage of requiring very low sample masses of ca. 2 ng of Li.

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收藏

页码：161 / 172

页数：12

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