Separation of thorium by facile liquid-liquid extraction, and its rapid spectrophotometric and ICP-AES determination in rocks and minerals

被引：9
|
作者：
Tarafder, Pranab Kumar [1 ]
Pradhan, Susanta Kumar [1 ]
Mondal, Rabin Kumar [1 ]
机构：
[1] Dept Atom Energy Eastern Reg, Atom Minerals Directorate Explorat & Res, Chem Lab, AMD Complex Khasmahal, Jamshedpur 831002, Bihar, India
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 309卷 / 03期
关键词：
Thorium; 2,3 dihydroxynaphthalene (2,3 H2ND); Solvent extraction; Spectrophotometry; Rocks; Minerals; ATOMIC EMISSION-SPECTROMETRY; SOLID-PHASE EXTRACTION; RARE-EARTH-ELEMENTS; SILICATE ROCKS; URANIUM; SAMPLES; 2,3-DIHYDROXYNAPHTHALENE; LANTHANIDES; COMPLEXES;
D O I：
10.1007/s10967-016-4738-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel method for simple, rapid and effective separation of thorium for it's determination in geological samples such as rocks, and minerals has been developed. Thorium forms 1:2 neutral complex with the bi-dentate ligand, 2,3-dihydroxynaphthalene (2,3-H2ND), which is extracted into ethylacetate at pH 5-6. Thorium from the organic phase is quantitatively stripped off using dilute hydrochloric acid, and then determined spectrophotometrically as well as by ICP-AES. The effects of variables affecting the quantitative extraction of thorium have been studied in detail. The method has been validated by analyzing certified reference materials (CRM). RSD of the method varied over the range 1 to 5 %. The method has been successfully applied to rocks and minerals.
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页码：1021 / 1028
页数：8
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