南美洲苏里南原始和金矿开采影响的水生生态系统中的汞含量。
Mercury levels in pristine and gold mining impacted aquatic ecosystems of Suriname, South America.
机构信息
National Zoological Collection/Center of Environmental Research, Anton de Kom University of Suriname, Paramaribo, Suriname.
出版信息
Ambio. 2012 Dec;41(8):873-82. doi: 10.1007/s13280-012-0299-9. Epub 2012 Jun 6.
Abstract
Mercury levels in sediment and predatory fish were measured for 53 localities in Suriname. The average mercury level in bottom sediment surpassed the Canadian standard for sediment in most localities, except the coastal plains. Of the predatory fish, 41 % had a mercury level above the European Union standard for human consumption of 0.5 μg g(-1). Highest mercury levels were found in fish from the Brokopondo Reservoir and from the Upper Coppename River. High levels of mercury in fish in pristine areas are explained by atmospheric transportation of mercury with the northeastern trade winds followed by wet deposition. Contrary to gold mining areas, where mercury is bound to drifting sediments, in "pristine" areas the mercury is freely available for bio-accumulation and uptake. Impacts on piscivorous reptiles, birds, and mammals are unknown, but likely to be negative.
摘要
在苏里南的 53 个地点测量了沉积物和掠食性鱼类中的汞含量。大多数地点（沿海平原除外）的底栖沉积物中的汞平均水平超过了加拿大的沉积物标准。在这些掠食性鱼类中，有 41%的鱼类的汞含量超过了欧盟规定的人类食用 0.5μg/g 的标准。在布罗科蓬多水库和上科佩内马河捕获的鱼类中，汞含量最高。在原始地区鱼类中发现的高汞水平是由大气中汞与东北贸易风一起传输，然后通过湿沉降造成的。与金矿区不同，在那里汞与漂流沉积物结合在一起，在“原始”地区，汞可以自由地进行生物积累和吸收。对食鱼爬行动物、鸟类和哺乳动物的影响尚不清楚，但可能是负面的。
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