Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, P.R. China.
Int J Environ Health Res. 2009 Dec;19(6):405-19. doi: 10.1080/09603120902795598.
Baihua Lake, a man-made reservoir, is one of the five drinking water sources for Guiyang City in China's southwestern province of Guizhou. In the present research, the distribution and accumulation characteristics of heavy metals (Pb, Cd, As, Cu and Zn) for the sediment of this lake were analyzed by examination of 10 recently collected samples. A method based on toxic-response factor was applied to assess the potential ecological risk of these heavy metals to the water body. For comparison, the two sets of reference data representing the pre-industrial and the local baseline pollution levels were employed to derive the accumulating coefficients for the heavy metals under study. The calculated potential ecological risk indices show that the lake was polluted by heavy metals and both cadmium and arsenic loadings were critical factors responsible for the ecological hazards posed to Baihua Lake by the five elements.
百花湖是中国西南部贵州省贵阳市的五个饮用水源之一，是一座人工水库。在本研究中，通过对最近采集的 10 个样本的检测，分析了该湖泊沉积物中重金属（Pb、Cd、As、Cu 和 Zn）的分布和积累特征。应用基于毒性反应因子的方法来评估这些重金属对水体的潜在生态风险。为了进行比较，使用了两组代表工业前和当地基线污染水平的参考数据，得出了研究中重金属的积累系数。计算出的潜在生态风险指数表明，该湖受到重金属污染，镉和砷的负荷是造成该湖受这五种元素生态危害的关键因素。
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