Strategies for isotope ratio measurements with a double focusing sector field ICP-MS

被引：24

作者：

Hamester, M ^{[1
]}

Wiederin, D ^{[1
]}

Wills, J ^{[1
]}

Kerl, W ^{[1
]}

Douthitt, CB ^{[1
]}

机构：

[1] Finnigan MAT GmbH, D-28197 Bremen, Germany

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1999年 / 364卷 / 05期

关键词：

D O I：

10.1007/s002160051374

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A single collector double focusing sector field ICP-MS is evaluated for the determination of isotope ratios. Spectral interferences (e.g. (ArNa)-Ar-40-Na-23 on Cu-63) can lead to calculation of inaccurate ratios. The use of high resolution enables such interferences to be separated from the isotopes of interest. External reproducibilities of < 0.02% are shown for uninterfered isotopes (measured at low resolution R = 300) and < 0.1% for interfered isotopes which required the use of medium (R = 4000) and high resolution (R = 10000).

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收藏

页码：495 / 497

页数：3

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