Distribution of methyl mercury in Rana chensinensis and environmental media in gold-mining areas of upper reaches of Songhua River,China |
| |
Authors: | Ning Wang Gang Zhang Te Liu Qingxiang Cai |
| |
Affiliation: | College of Urban and Environment Sciences, Northeast Normal University, Changchun 130024, China |
| |
Abstract: | The distribution characteristics of methyl mercury in Rana chensinensis and water, sediment and soil in gold-mining areas of the upper reaches of the Songhua River, China were studied by field sampling and laboratory testing. The results show that the methyl mercury contents in water, sediment and soil in gold-mining areas are much higher than those in the control site, indicating that gold-mining activities intensify the methyl mercury pollution in the study area. Methyl mercury contents are in a descending order of sediment > soil > water in the environment, and in a descending order of brain > viscera > muscle > skin in Rana chensinensis. There are significant correlation between methyl mercury contents in Rana chensinensis and those in water and sediment. In particular, the methyl mercury content in the skin of Rana chensinensis is positively correlated with those in water and sediment in spring. Therefore, skin is one of main intake pathways for methyl mercury due to its high permeability. |
| |
Keywords: | methyl mercury Rana chensinensis environmental pollution gold-mining area Songhua River |
本文献已被 维普 万方数据 SpringerLink 等数据库收录! |
|