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廉梅花,孙丽娜,李登宇,关雪. 沈阳细河流域土壤和作物中汞的潜在生态危害及健康风险评价[J]. 生态毒理学报, 2014, 9(5): 916-923
沈阳细河流域土壤和作物中汞的潜在生态危害及健康风险评价
Assessment of Potential Ecological and Health Risk of Mercury in Soils and Plants along Xi River Watershed in Shenyang
投稿时间:2014-05-07  修订日期:2014-06-07
DOI:10.7524/AJE.1673-5897.20140507001
中文关键词:  沈 阳  细 河    潜在生态危害  健康风险评价
英文关键词:Shenyang  Xi River  Hg  potential ecological risk index  health risk assessment
基金项目:国家自然科学基金重点项目(21037002);973计划项目(2014CB441100);沈阳市科技计划项目(F14-133-9-00)
作者单位
廉梅花 1. 沈阳大学区域污染环境生态修复教育部重点实验室沈阳 110044 2. 东北大学资源与土木工程学院沈阳 110004 
孙丽娜 沈阳大学环境学院沈阳 110044 
李登宇 沈阳大学环境学院沈阳 110044 
关雪 沈阳大学环境学院沈阳 110044 
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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。
           
AuthorAffiliation
Lian Meihua1. College of Environment, Shenyang University, Shenyang 110044, China 2. College of Resource Environment and Civil Engineering, Northeast University, Shenyang 110004, China
Sun LinaCollege of Environment, Shenyang University, Shenyang 110044, China
Li DengyuCollege of Environment, Shenyang University, Shenyang 110044, China
Guan XueCollege of Environment, Shenyang University, Shenyang 110044, China
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 Hg pollution was undesirable in the investigated area. There was 43.21% 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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