PAN Lu-sheng1, 2, SHI Chun-mei3, FENG Xin-bin2,*, LIU Xiu-wei1, HU Cai-yuan1
(1. Institute of Geological Environment Monitoring of Guizhou Province, Guiyang 550004, China;.
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, , China;
3. Guizhou Normal University, Guiyang 550004, China.)
Abstract: In order to reveal the spatial and temporal distribution of mercury and methylmercury in sediments of the Dongfeng Reservoir, sediment samples were collected in summer and spring. Their mercury and methylmercury concentrations were analyzed by cold vapor atomic fluorescence spectrometry and GC-CVAFS technique, respectively. The results showed that the characteristics of profile distribution of total mercury in the sediments are in good consistency in spring and summer without obvious difference with seasonal change. Methylmercury concentrations in the reservoir sediments in summer were slightly higher than those in spring and the concentrations in middle and down streams were higher than those in upstream. But their distribution in the vertical profile did not display any peak, which was different in the sediments from other reservoirs.
Key words：Dongfeng Reservoir; sediment; mercury; methylmercury; organic matter
EARTH AND ENVIRONMENT Vol. 40, No.2, Tot No.288, 2012, Page 201-207
