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中文摘要：
为研究沈阳市细河流域土壤汞（Hg）的污染和健康风险状况,对该区土壤和农作物中Hg的含量和分布进行了调查和分析.采用Hakanson潜在生态风险危害指数法评价土壤Hg的污染状况,并利用健康风险评价模型对Hg通过不同暴露途径所引起的健康风险作出评价.研究结果表明,细河流域土壤Hg的潜在生态危害相对较大,其中43.21％样品处于中等危害程度,26.62％属于强及以上风险级别.健康风险评价模型计算表明,人体经食物摄取是土壤Hg暴露的主要途径,Hg日平均暴露剂量依次为食物摄取＞呼吸暴露＞皮肤暴露;成人和儿童的非致癌危害指数分别为0.315和0.713,均低于风险阈值1,表明Hg不会对人体造成健康危害.
英文摘要：
In order to assess the pollution and human health risk of soil Hg in Xi River watershed in Shenyang,total concentrations and distribution of Hg in soils and crops were investigated and analyzed.Potential ecological hazard of Hg in soils was assessed using Hakanson＇s potential risk index method.In addition,health risk assessment model was carried out to evaluate the human health risk by means of different exposure approaches.Results showed that the index of rHg pollution was undesirable in the investigated area.There was 4321％ of total sample reached moderately level and 26.62％ reached heavily contaminated and even extremely contaminated level.Moreover,evaluation of human health risk demonstrated that the major exposure pathway of Hg was food ingestion.The amount of chronic daily average exposure was in order of food ingestion ＞ inhalation ＞ dermal uptake.Non-cancer hazard indexes of Hg were both below the threshold values for adult and children,which were 0.315 and 0.713 respectively.Results indicated that Hg did not cause harm to the local people in this area.
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