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Mobility and Methylation of Mercury in Forest Soils Development of an In-Situ Stable Isotope Tracer Technique and Initial Results |
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| Authors: | Munthe John Lyvén Benny Parkman Helena Lee Ying-Hua Iverfeldt Åke Haraldsson Conny Verta Matti Porvari Petri |
| Institution: | (1) IVL Swedish Environmental Research Institute, P.O. Box 47086, S-402 58 Göteborg, Sweden;(2) Department of Analytical and Marine Chemistry, Chalmers University of Technology, S-412 96 Göteborg, Sweden;(3) Present address: SP Swedish National Testing and Research Institute, P.O. Box 857, S-501 15 Borås, Sweden;(4) IVL Swedish Environmental Research Institute, P.O. Box 47086, S-402 58 Göteborg, Sweden;(5) Present address: National Chemicals Inspectorate, P.O. Box 1384, S-171 27 Solna, Sweden;(6) Finnish Environment Institute (FEI), P.O.Box 140, 00251 Helsinki. Kesakatu 6, 00260 Helsinki |
| Abstract: | A method for investigating in-situmethylation and mobility of mercury has beendeveloped and applied to forest soil. The methodis based on additions of stable 199Hgisotopes to forest soil plots followed bysampling and analysis of isotope ratios of totalmercury and MeHg using ICP-MS. Initial resultsindicate that a fraction (30%) of the mercuryadded to the forest soils is immobilised over atime scale of 16 months. A small but significantfraction of the mercury is methylated during thesame time scale. Higher methylation rates werefound in wetland soil than in dry forest podzolsoil. |
| Keywords: | forest soils isotopes mercury methylmercury methylation mobility |
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