ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 41, Number 8
JKCSEZ 41(8)
April 20, 1997 

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.