| 新乡市地表水体HCHs和DDTs的分布特征及生态风险评价 |
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| 引用本文： | 冯精兰,余浩,刘书卉,刘梦琳,孙剑辉.新乡市地表水体HCHs和DDTs的分布特征及生态风险评价[J].环境科学,2015,36(8):2849-2856. |
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| 作者姓名： | 冯精兰 余浩 刘书卉 刘梦琳 孙剑辉 |
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| 作者单位： | 河南师范大学环境学院，黄淮水环境污染防治省部共建教育部重点实验室，河南省环境污染控制重点实验室，新乡 453007 |
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| 基金项目： | 国家自然科学基金项目(41103071); 河南省基础与前沿技术研究项目(122300410270); 河南省创新型科技人才队伍建设工程项目; 河南省科技创新人才计划项目(134200510014) |
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| 摘 要： | 为了解新乡市地表水中HCHs和DDTs的分布特征及生态风险,采集新乡市18个地表水样并测定其中HCHs和DDTs的含量,采用概率密度函数重叠面积法和安全阈值法评价了HCHs和DDTs的生态风险.结果表明,新乡市地表水中HCHs和DDTs的质量浓度范围分别为1.28~49.2 ng·L-1和0.42~12.3 ng·L-1,与世界各地的地表水中HCHs和DDTs残留质量浓度相比属于中等污染水平.异构体比值表明HCHs污染的主要来源是林丹的使用,而DDTs的残留来源于工业品DDTs的使用.生态风险评价基于DDD、γ-HCHs和p,p'-DDT的暴露浓度以及相应的毒性数据,概率密度函数重叠面积法和安全阈值法均表明了这3种有机氯农药中DDD的风险最大,其次是γ-HCHs,p,p'-DDT的生态风险最小;安全阈值法进一步表明DDD、γ-HCHs和p,p'-DDT超过影响10%水生生物的概率分别为10.2%、5.94%和0.01%.
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| 关 键 词： | HCHs DDTs 新乡市地表水 生态风险 概率密度函数重叠面积法 安全阈值法 |
| 收稿时间： | 2015/2/11 0:00:00 |
| 修稿时间： | 2015/3/25 0:00:00 |
Distribution Characteristics and Ecological Risk Assessment of HCHs and DDTs in Surface Water Bodies in Xinxiang |
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| FENG Jing-lan,YU Hao,LIU Shu-hui,LIU Meng-lin and SUN Jian-hui.Distribution Characteristics and Ecological Risk Assessment of HCHs and DDTs in Surface Water Bodies in Xinxiang[J].Chinese Journal of Environmental Science,2015,36(8):2849-2856. |
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| Authors: | FENG Jing-lan YU Hao LIU Shu-hui LIU Meng-lin and SUN Jian-hui |
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| Institution: | Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China;Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China;Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China;Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China;Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China |
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| Abstract: | |
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| Keywords: | HCHs DDTs surface water from Xinxiang ecological risk overlapping areas of probability density function safety threshold method |
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