Determination of boron isotopic composition in natural samples by thermal ionization mass spectrometry

被引：4

作者：

Ahmed, S ^{[1
]}

Awan, MA ^{[1
]}

Rehman, UU ^{[1
]}

Asghar, M ^{[1
]}

机构：

[1] PINSTECH, Div Appl Chem, Islamabad, Pakistan

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2000年 / 243卷 / 03期

关键词：

D O I：

10.1023/A:1010634706535

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thermal ionization mass spectrometry has been used for the determination of isotopic composition of boron in natural samples, like water, with an improved degree of accuracy and precision. After concentration and separation boron is treated with an excess of sodium hydroxide in order to convert it completely to sodium metaborate. The excess of sodium hydroxide present in the sample causes problems in the isotopic analysis. This excess is neutralized with 0.1M nitric acid on the filament while loading the sample by a special technique. This procedure improves the precision and accuracy of the analysis to a large extent.

引用

页码：723 / 726

页数：4

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