State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Bull Environ Contam Toxicol. 2012 Nov;89(5):1009-15. doi: 10.1007/s00128-012-0784-7. Epub 2012 Aug 25.
Metals in the surface sediment and zoobenthos throughout Taihu Lake were investigated to explore their distribution, source and potential ecological risks. The result showed that the average metal concentration followed the order: Fe > Mn > Zn > Cr > Ni > Pb > Cu > Cd, with the highest value of 27.9 g/kg (Fe) and lowest value 0.54 mg/kg (Cd). Anthropogenic inputs were the major sources of metals, followed by geochemical processes, and organic matter is also a control for metals. Spatially, high metal concentrations were distributed in the northern lake and low concentrations in Gonghu Bay and the eastern part of the lake. Risk assessment showed that Pb had the highest ecological risk (E(r) = 10.32), followed by Cu and Ni (E(r) = 8.77-8.81), while Zn had the lowest risk (E(r) = 1.59). Analysis indicated that Corbicula sp. was more suitable for biomonitoring than Bellamya sp.
对太湖表层沉积物和底栖动物中的金属进行了调查，以探讨其分布、来源和潜在的生态风险。结果表明，金属平均浓度的顺序为：Fe＞Mn＞Zn＞Cr＞Ni＞Pb＞Cu＞Cd，其中最高值为 27.9 g/kg（Fe），最低值为 0.54 mg/kg（Cd）。人为输入是金属的主要来源，其次是地球化学过程，有机质也是金属的控制因素。空间上，金属浓度高的区域分布在北部湖区，而龚湖湾和湖东部的浓度较低。风险评估表明，Pb 的生态风险最高（E(r) = 10.32），其次是 Cu 和 Ni（E(r) = 8.77-8.81），而 Zn 的风险最低（E(r) = 1.59）。分析表明，Corbicula sp. 比 Bellamya sp. 更适合用于生物监测。
