Chemistry of methylmercurials in aqueous solution |
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Authors: | NL Wolfe RG Zepp JA Gordon GL Baughman |
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Institution: | U. S. Environmental Protection Agency, National Environmental Research Center-Corvallis, Southeast Environmental Research Laboratory, College Station Road, Athens, Georgia 30601 USA |
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Abstract: | The kinetics of acid cleavage of dimethylmercury (DMM) was studied in aqueous solution. At 25°C and pH 5, DMM has an acidolysis half-life of about 33 years. Cleavage of dimethylmercury by mercuric species is pH-dependent and is slow at the concentrations of mercuric species in solution in the aquatic environment. Dimethylmercury and methylmercuric ion do not undergo sunlight photodegradation. The evaporative loss of dimethylmercury from water can be compared with oxygen diffusion based on the ratio of transfer constants. |
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