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Comparison of chemical and photochemical generation of hydrides in Se speciation study with HPLC-HG-ICPMS
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2012, v.25 no.6, pp.339-344
https://doi.org/10.5806/AST.2012.25.6.339
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(2012). Comparison of chemical and photochemical generation of hydrides in Se speciation study with HPLC-HG-ICPMS. Analytical Science and Technology, 25(6), 339-344, https://doi.org/10.5806/AST.2012.25.6.339
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Abstract
In this research, hydride generation in HPLC-ICPMS for the selenium speciation was investigated. Chemical and photochemical vapor generation techniques were compared for the effective generation of selenium vapour. HBr/KBrO3 was used for the chemical reduction and a UV lamp was used for the photochemical reduction. It was found out that the photochemical reduction was more effective than the chemical reduction in all of selenium species studied. The optimum conditions for the generation of vapour are 0.4% KI, 2.5%NaBH4, and 1.0 M HCl. The enhancement factor using a photochemical hydride generation was from 6.3 to 16.7 times for inorganic and organic selenium species.
- keywords
- Se, Se speciation, hydride generation, photochemical reduction, HPLC-HG-ICPMS
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