基于熵权模糊理论的地下水有机污染健康风险评价

健康风险评价过程中由于多方面的不确定使得评价结果的可信度下降，熵权模糊理论的应用可以显著提高评价结果的可靠度。文中针对地下水有机物的特性，对U．S．EPA推荐模型进行了改进，考虑有机物自然衰减作用。本次研究以沈阳细河周边地区为例，在分析测试该地区地下水有机污染特征的基础上，采用熵权模糊综合评价方法，考虑各有机物对其致癌风险的贡献率计算致癌风险和非致癌危害指数以及评价标准，确定致癌风险等级，进行地下水有机污染健康风险评价。结果表明：细河及其周边地区地下水有机污染致癌风险和非致癌危害指数都很高，对人体健康产生一定的影响，应该加强重视有机污染造成的危害，减少有机污染，为公众和环境管理者提供相对准确和科学的信息。

Research on Entropy-weight Fuzzy Model for Assessment of Organic Contamination Health Risk in Groundwater

As the uncertainties making the credibility of evaluation results dropping in health risk assessment process, the application of the entropy-Weight fuzzy theory can improve the reliability of the evaluation results. Aiming at the characteristics of the organic matters in groundwater, the paper will improve the U. S. EPA recommend model, consider organic natural attenuation effect. We take the groundwater in Shenyang Xi River Area as an example, based on the analysis of testing the region groundwater organic pollution characteristics. This paper will adopt the entropy weight fuzzy comprehensive evaluation method to determine the carcinogenic risk level for assessment of the groundwater organic pollution health risk, taking the contribution rate of organic matters in consideration to calculate the carcinogenic risk, non-carcinogenic hazard index and evaluation standard. The results show that the carcinogenic risk of organic pollutions and non-carcinogenic hazard index in Xi River and its surrounding areas groundwater is very high. It tends to have some risk to human health, more attention should paid to strengthen the organic pollution damage, reduce the organic pollution, provide relatively accurate and scientific information for the public and environmental managers.