东平湖水环境健康风险初步评价

Preliminary Health Risk Assessment of Water Environment in Dongping Lake

为了解东平湖水环境健康风险,于枯、丰水期对东平湖进行了采样,并分析8种与健康风险相关的污染因子的浓度。采用国家标准和水环境健康风险评价模型对东平湖水环境及其健康风险进行了评价。结果表明：东平湖总体水环境质量良好,目标污染物的浓度大多符合地表水环境质量Ⅰ类标准和生活饮用水卫生标准;致癌物质铬的健康风险水平较高,最高可达2.92×10-4a-1的水平,大于美国环境保护局推荐的最大可接受水平1×10-4a-1;非致癌物质的健康风险水平较低,为10-11~10-9a-1的水平。建议后续控制东平湖周围含铬废水的排放。

In order to know the health risk of Dongping Lake,samples have been obtained from the lake during dry and wet seasons. Concentrations of eight compounds related to health risk have been analyzed. National standards and the health risk assessment model have been utilized to evaluate its water environment and health risk. It is showed that the overall water quality of Dongping Lake is good and concentrations of eight targeted compounds almost all meet class Ⅰ standard of environmental quality standards for surface water and standards for drinking water quality. The health risk of cancinogenic chromium is high up to 2.92×10-4a-1,more than the maximum acceptable level of 1×10-4a-1recommended by USEPA and the health risk of non-carcinogenic substances was low to about10-11~ 10-9a-1. It is suggested that the discharge of chromium-containing waste water should be controlled in future.