Mercury Distribution Along the Food Chain of a Wetland Ecosystem at Sanjiang Plain, Northeast China.
Mercury Distribution Along the Food Chain of a Wetland Ecosystem at Sanjiang Plain, Northeast China.
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东北三江平原湿地生态系统食物链汞分布
DOI：
10.1007/s00128-016-2005-2
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Xuehong Zhou
中科院分区：
文献类型：
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作者：
Zhilong Ma;Qiang Wang;Zhongsheng Zhang;Xuehong Zhou
对三江平原马鹃岛湿地食物链中总汞（T-Hg）和甲基汞（MeHg）浓度进行了测定。分析了3种水鸟（大鸬鹚、苍鹭和大白鹭）的肌肉、肝脏、肾脏和大脑的4种组织，鱼类（草鱼、鲫鱼和长鼻鲟）、昆虫（掠食性潜水甲虫）、水生植物（沟芦苇）和土壤的肌肉组织。幼鱼组织中t -汞的平均浓度为0.392±0.237 mg/kg，成鱼组织中t -汞的平均浓度为1.999±2.053 mg/kg，鱼肌肉中t -汞的平均浓度为0.029±0.019 mg/kg。昆虫、植物和沉积物中T-Hg的相对含量分别为0.012±0.002、0.006±0.001和0.020±0.002 mg/kg。汞在湿地食物链上的生物积累可以反映东亚偏远地区汞污染的现状。
Concentrations of total mercury (T-Hg) and methylmercury (MeHg) in a wetland food chain were determined at Majuan Island of the Sanjiang Plain in China. Four tissues (muscle, liver, kidney and brain) of three waterbird species (great cormorant, grey heron and great egret), muscle tissues of fish (grass carp, crucian carp and longnose gudgeon), insects (predacious diving beetle), aquatic plants (ditch reed) and soil were analyzed. The mean concentrations of T-Hg were 0.392 ± 0.237 mg/kg for tissues of all juveniles, 1.999 ± 2.053 mg/kg for great cormorant adults, and 0.029 ± 0.019 mg/kg for fish muscle, respectively. While the relative contents of T-Hg of insects, plants and sediments were 0.012 ± 0.002, 0.006 ± 0.001 and 0.020 ± 0.002 mg/kg, respectively. Bioaccumulation of Hg along the wetland food chain may be able to show the current situation of Hg contamination in remote regions of East Asia.