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

被引：186
|
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.
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页码：249 / 255
页数：7
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