期刊
ENVIRONMENTAL POLLUTION
卷 159, 期 10, 页码 2861-2869出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.04.040
关键词
Bioaccumulation; Bioavailability; Mercury; Methylmercury
资金
- Federal Office for the Environment [09.0084.PJ/I235-1899]
Accumulation of total and methyl-Hg by mushrooms and earthworms was studied in thirty-four natural forest soils strongly varying in soil physico-chemical characteristics. Tissue Hg concentrations of both receptors did hardly correlate with Hg concentrations in soil. Both total and methyl-Hg concentrations in tissues were species-specific and dependent on the ecological groups of receptor. Methyl-Hg was low accounting for less than 5 and 8% of total Hg in tissues of mushrooms and earthworms, respectively, but with four times higher concentrations in earthworms than mushrooms. Total Hg concentrations in mushrooms averaged 0.96 mg Hg kg(-1) dw whereas litter decomposing mushrooms showed highest total Hg and methyl-Hg concentrations. Earthworms contained similar Hg concentrations (1.04 mg Hg kg(-1) dw) whereas endogeic earthworms accumulated highest amounts of Hg and methyl-Hg. (C) 2011 Elsevier Ltd. All rights reserved.
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