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KMID : 1059519970410080392
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Journal of the Korean Chemical Society
1997 Volume.41 No. 8 p.392 ~ p.398
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A Selective Determination Method of Inorganic and Organic Mercury
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Kim Chon-Han
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Abstract
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A method of selective determination of inorganic and organic mercury compounds has been described. The CHCl3 solution of a high molecular quaternary alkylammonium salt, Aliquat 336 was used for the simultaneous preconcentration of both inorganic, Hg2+ as its thiocyanate complex, and organic mercury compounds, CH3HgCl and C2H3O2HgC6H5 by extraction from their aqueous solution. Selective separation of the inorganic mercury from the extract was followed by stripping with 3 M HClO4 solution for the subsequent determination by CVAAS. Organic mercury was also determined by CVAAS after removal of CHCl3 solvent from the extract and decomposition of the residue with 4% KMnO4-1 M H2SO4. The mixtures of inorganic and organic mercury compounds contained 1.0 μg as Hg in 50 mL of sample solution(0.02 μgHg/mL) were analysed within ±6% by absolute errors.
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