Iodine Determination by Microwave Plasma Torch Atomic Emission Spectrometer Coupled with Online Preconcentration Vapor Generation Technique |
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| Authors: | FEI Yan-qun LUO Gui-min FENG Guo-dong CHEN Huan-wen FEI Qiang HUAN Yan-fu JIN Qin-han Key Laboratory for Molecular Enzymology Engineering of Ministry of Education |
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| Institution: | [1]Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education [2]Institute of Analytical Science, School of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Changchun 130021, P R. China |
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| Abstract: | This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry (MPT-AES) coupled with online preconcentration vapor generation method.A new desolvation device,multistrand Nation dryer,was used as the substitute for condenser desolvation system.Some experimental conditions,such as preconcentration time,acidity of sample solution,rinsing solution acidity and dynamic linear range were investigated and optimized.The new desolvation system eliminates the problem of decreasing emission intensity of I(I) 206.238 nm line with the increase of working time on a conventional condenser desolvation system,thus greatly improving the reproducibility. |
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| Keywords: | MPT-AES On-line preconcentration Vapor generation Nation dryer Membrane desoivation |
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