A rapid mass spectrometric method for the simultaneous analysis of barium, cadmium, and strontium in foraminifera shells

被引：77

作者：

Lea, DW ^{[1
]}

Martin, PA ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,INST MARINE SCI,SANTA BARBARA,CA 93106

来源：

GEOCHIMICA ET COSMOCHIMICA ACTA | 1996年 / 60卷 / 16期

关键词：

D O I：

10.1016/0016-7037(96)00184-6

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：

Recent developments in inductively coupled plasma mass spectrometry (ICP-MS) make it possible to simultaneously measure a suite of trace elements of paleoceanographic interest in foraminifera shells from deep-sea sediments. Here we present an ICP-MS method that allows determination of precise Cd/Ca, Ba/Ca, Sr/Ca, and Mn/Ca ratios in purified foraminifera shell samples as small as 25 mu g. The method utilizes a combination of isotope dilution for Ba and Cd determination and internal standardization for Ca and Sr determination. Long term reproducibility of the method is 2-3% for the elemental ratios. The principal advantages of the method are that all four elemental ratios of paleoceanographic interest are generated simultaneously for a single sample of purified foraminiferal carbonate, minimizing sample size requirement, reducing analysis time, and improving correlation between proxies.

引用

页码：3143 / 3149

页数：7

共 29 条

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