Exchange extraction equilibrium of mercury(II) and bis(diethyldithiocarbamato)copper in sub-and superequivalent method of isotope dilution analysis

A diphenylthiocarbazone (dithizone) based liquid‐liquid extraction method of general utility is proposed for small‐scale Hg(II) extraction from natural waters. The quantitative aspects related to the extraction are studied in terms of distribution of mercury dithizonate in carbon tetrachloride‐water system at 293 K (20±1°C). Various distribution constants related to the reagent and the complex formed are evaluated. The equilibrium and kinetic studies of extraction and complex formation are analytically based on atomic absorption and colorimetric methods. Local natural waters were subjected to the proposed method for Hg(II) removal. The method is found to be capable of removing above 98% mercury in a single‐step extraction under the conditions evaluated in terms of matrix pH, equilibration time and amount of reagent.

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Liquid-liquid extractions with metal diethyldithiocarbamates as reagents

Bajo¹

1985

Journal of Radioanalytical and Nuclear Chemistry, Articles

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Exchange extraction equilibrium of mercury(II) and bis(diethyldithiocarbamato)copper in sub-and superequivalent method of isotope dilution analysis

Cited by 3 publications

References 1 publication

Advances in Speciation Analysis of Mercury in the Environment

Advances in Speciation Analysis of Mercury in the Environment

Equilibrium and Kinetic Aspects of Hg(II) Extraction from Natural Waters with Diphenylthiocarbazone

Liquid-liquid extractions with metal diethyldithiocarbamates as reagents

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