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当前位置: 首页 > 文章 > 贵州草海沉积物汞的含量和分布特征初步研究 西南大学学报(自然科学版) 2009,31 (1) 32-36
Position: Home > Articles > A Preliminary Study of the Contents and Distribution of Mercury in the Sediments of Lake Caohai in Guizhou Journal of Southwest University(Natural Science Edition) 2009,31 (1) 32-36

贵州草海沉积物汞的含量和分布特征初步研究

作  者：
钱晓莉;冯新斌;闭向阳;郭艳娜;付学吾;梁鹏
单  位：
贵州大学;中国科学院
关键词：
汞;含量;沉积物;贵州草海
摘  要：
为弄清目前草海沉积物汞污染情况,研究了不同水文季节(枯水期和丰水期)草海沉积物中汞的含量和分布特征.结果表明:草海沉积物总汞(THg)浓度为762.7～1014.7ng/g,甲基汞(TMeHg)浓度为0.11～3.9ng/g;沉积物总汞高于天然沉积物汞浓度,表明沉积物已经受到污染.有机质的降解直接或间接影响总汞的分布;沉积物甲基汞在丰水期大于枯水期,有机质含量高的草海沉积物中甲基汞含量却不高,主要与丰富的水生植物有关.
译  名：
A Preliminary Study of the Contents and Distribution of Mercury in the Sediments of Lake Caohai in Guizhou
作  者：
QIAN Xiao-li1,2,FENG Xin-bin2,BI Xiang-yang2,3,GUO Yan-na2,3,FU Xue-wu2,3,LIANGPeng2,41. College of Resources and Environment Engineering,Guizhou University,Guiyang Guizhou 550003,China;2. State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China;3. Graduate School of Chinese Academy of Science,Beijing 100039,China;4. School of Resources and Environment,Southwest University,Chongqing 400716,China
关键词：
mercury; content; sediment; Lake Caohai in Guizhou
摘  要：
In order to find out whether Lake Caohai was mercury-polluted,the content and distribution of mercury were studied in the sediments during the low-flow period and high-flow period. The concentrations of total mercury ranged from 762.7 ng/g to 1 014.7 ng/g,total methylmercury ranged from 0.11 to 3.9 ng/g,which is too high compared with the data reported in other uncontaminated lakes,indicating that Caohai has been contaminated in terms of mercury in its sediments. The degradation of organic substances affected the distribution of mercury in the sediments. Concentration of methylmercury in the higher flow period was higher than in the low flux period. However,concentration of methylmercury was not high in the sediments containing high organic matter,which was mainly associated with the abundant hydrophytes in the lake.

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