Concomitant separation of strontium and samarium-neodymium for isotopic analysis in silicate samples, based on specific extraction chromatography
✍ Scribed by Christian Pin; Danielle Briot; Chantal Bassin; Franck Poitrasson
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 958 KB
- Volume
- 298
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
A separation scheme for strontium and light rare earth elements and its application to the isotopic analysis of strontium and neodymium in silicate rocks are presented. This method benefits from the selectivity and high capacity of two newly introduced extraction chromatographic materials, referred to as Sr.Spec and TRU,Spec, respectively. These afford a straightforward separation of Sr and Sm + Nd with high yield, good purity and satisfactory blank levels, on very small (0.25 ml) cotumns using small volumes of solutions of a single mineral acid, HNO,. The validity of the method is illustrated by the measurement of "Sr/ '%r and ~*3Nd/*~Nd ratios in twelve inte~ational standard reference materials.