EVALUATION OF A STRONTIUM-SPECIFIC EXTRACTION CHROMATOGRAPHIC METHOD FOR ISOTOPIC ANALYSIS IN GEOLOGICAL-MATERIALS

被引：187

作者：

PIN, C

BASSIN, C

机构：

[1] Département de Géologie, URA 10 CNRS, Université Blaise Pascal, 63038 Clermont-Ferrand Cedex

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 269卷 / 02期

关键词：

ISOTOPE DILUTION METHODS; LIQUID CHROMATOGRAPHY; MASS SPECTROMETRY; EXTRACTION; GEOLOGICAL MATERIALS; ISOTOPE RATIOS; STRONTIUM;

D O I：

10.1016/0003-2670(92)85409-Y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The suitability of a recently published extraction chromatographic method to isolate strontium from geological samples for isotopic analyses by thermal ionization mass spectrometry was evaluated. This method has several significant advantages over conventional ion-exchange techniques: high selectivity combined with high recoveries, overall simplicity and the use of very small reagent volumes of a single acid (HNO3). Satisfactory blank levels were obtained on new columns, but memory effects could not be totally eliminated from already used extraction chromatographic material. Determinations of Sr-87/Sr-86 ratios and Sr concentration by isotope dilution following the proposed method are reported for thirteen international rock standards.

引用

页码：249 / 255

页数：7

共 15 条

[1] RADIOACTIVE AGES OF MINERALS FROM THE BROWN DERBY MINE AND THE QUARTZ CREEK GRANITE NEAR GUNNISON, COLORADO [J].