PRECISE BORON ISOTOPIC ANALYSIS OF AQUEOUS SAMPLES - ION-EXCHANGE EXTRACTION AND MASS-SPECTROMETRY

被引：57

作者：

LEEMAN, WP ^{[1
]}

VOCKE, RD ^{[1
]}

BEARY, ES ^{[1
]}

PAULSEN, PJ ^{[1
]}

机构：

[1] NIST,DIV INORGAN ANALYT CHEM,GAITHERSBURG,MD 20899

来源：

GEOCHIMICA ET COSMOCHIMICA ACTA | 1991年 / 55卷 / 12期

关键词：

D O I：

10.1016/0016-7037(91)90085-J

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：

This paper presents details of an effective ion exchange method for extracting and purifying boron from aqueous fluids as well as modifications to the cesium metaborate mass spectrometric method for determining boron isotopic ratios. Using these methods, natural waters and brines may be routinely analyzed with precision and accuracy on the order of 0.25 parts per thousand (2-sigma), as indicated by analyses of standards and samples taken through the full separation procedure. We review and compare the essential methods used previously for boron isotopic analysis and discuss factors that adversely affect analytical precision and accuracy.

引用

页码：3901 / 3907

页数：7

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