| 基于梯形模糊数的地表灰尘重金属污染健康风险评价模型 |
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| 引用本文： | 李如忠,童芳,周爱佳,吴亚东,张萍,喻佳.基于梯形模糊数的地表灰尘重金属污染健康风险评价模型[J].环境科学学报,2011,31(8):1790-1798. |
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| 作者姓名： | 李如忠 童芳 周爱佳 吴亚东 张萍 喻佳 |
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| 作者单位： | 合肥工业大学资源与环境工程学院,合肥,230009 |
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| 基金项目： | 安徽省科技攻关计划重点项目（No. 07010302165）；合肥工业大学大学生创新性试验计划项目 |
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| 摘 要： | 将梯形模糊数引入环境健康风险评价领域,构建了城市地表灰尘重金属污染健康风险评价模糊模型,提出了健康风险等级判别方法和具有模糊化特征的风险等级判别标准.同时,选取重金属Zn、Pb、Cu、Cd和Cr为评价因子,将基于梯形模糊数的健康风险评价模型和风险等级识别方法应用于合肥市城区地表灰尘重金属污染的健康风险评价中.结果表明,地表灰尘中Cd和Cr的致癌风险均很低,期望值分别为1.49×10-9和2.75×10-7,低于美国环保署（USEPA）推荐值10-6;Cd和Cr致癌总风险对Ⅰ级风险的隶属度为0.927,因此属于极低风险水平.儿童的地表灰尘重金属非致癌总风险期望值为1.888,超过了安全阈值1.0,而成人的非致癌总风险期望值仅为0.278;儿童和成人健康风险的主要暴露途径都是手-口直接摄入.
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| 关 键 词： | 合肥 梯形模糊数 地表灰尘 重金属 健康风险评价 |
| 收稿时间： | 2010/10/27 0:00:00 |
| 修稿时间： | 1/4/2011 3:55:52 PM |
Fuzzy assessment model for the health risk of heavy metals in urban dusts based on trapezoidal fuzzy numbers |
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| LI Ruzhong,TONG Fang,ZHOU Aiji,WU Yadong,ZHANG Ping and YU Jia.Fuzzy assessment model for the health risk of heavy metals in urban dusts based on trapezoidal fuzzy numbers[J].Acta Scientiae Circumstantiae,2011,31(8):1790-1798. |
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| Authors: | LI Ruzhong TONG Fang ZHOU Aiji WU Yadong ZHANG Ping and YU Jia |
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| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009 and School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009 |
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| Abstract: | |
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| Keywords: | trapezoidal fuzzy number urban dust heavy metal health risk assessment |
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