| 突发性苯污染饮用水的健康风险评价 |
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| 引用本文： | 李安定,张 彦,周北海,付英明.突发性苯污染饮用水的健康风险评价[J].环境科学研究,2015,28(5):782-787. |
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| 作者姓名： | 李安定 张 彦 周北海 付英明 |
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| 作者单位： | 1.北京科技大学土木与环境工程学院, 北京 100083 ;中日友好环境保护中心, 北京 100029 |
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| 基金项目： | 中欧环境可持续项目(DCI-ASIE/2013/323-550) |
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| 摘 要： | 突发性环境污染事件由于具有污染物浓度高、不易察觉、常规处理难度大等特点,因此环境健康风险较高. 以饮用水受到突发性苯污染为例,模拟研究了苯随着自来水进入居民家庭后,分别通过饮用、皮肤接触和呼吸等暴露途径对人体造成的健康风险. 结果表明,3种暴露途径下,皮肤接触暴露的健康风险最高,当自来水中ρ(苯)为300.00和10.00 μg/L时,健康风险分别为4.09×10-3和1.19×10-4. 饮用暴露的健康风险最低,当自来水中ρ(苯)为300.00和10.00 μg/L时,健康风险最大值为4.61×10-6,最小值趋近于0,这主要是由于苯极易挥发,而我国居民饮用煮沸后的开水,开水中苯的残留量较低. 经过3种暴露途径进入人体的苯的日均综合暴露健康风险最大值为4.33×10-3,最小值为1.26×10-4,超过了US EPA(美国国家环境保护局)人体健康风险建议最大值(1×10-4).
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| 关 键 词： | 苯 健康风险 饮用水 评价 |
Health Risk Assessment of Benzene in Accidental Pollution of Tap Water |
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| LI Anding,ZHANG Yan,ZHOU Beihai and FU Yingming.Health Risk Assessment of Benzene in Accidental Pollution of Tap Water[J].Research of Environmental Sciences,2015,28(5):782-787. |
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| Authors: | LI Anding ZHANG Yan ZHOU Beihai and FU Yingming |
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| Affiliation: | 1.Civil and Environment Engineering School, University of Science and Technology Beijing, Beijing 100083, China ;Sino-Japan Friendship Center for Environmental Protection, Beijing 100029, China2.Tianjin Academy of Environmental Sciences, Tianjin 300191, China3.Civil and Environment Engineering School, University of Science and Technology Beijing, Beijing 100083, China4.Tianjin Huanke Detection Technology Co., Ltd., Tianjin 300191, China |
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| Abstract: | Environmental health risks from accidental pollution often occur due to its high concentration, low detectability and difficult treatment of the pollutants. Human health risk of benzene in tap water was estimated through three exposure pathways in the household:drinking, bathing and respiration. It was observed that bathing is the pathway with the highest risk to human health, with the risk value estimated to be 4.09×10-3 and 1.19×10-4 when the benzene concentration was 300.00 and 10.00 μg/L, respectively. As Chinese citizens are used to drinking hot water and benzene easily evaporates during boiling, the drinking pathway had the lowest risk to human health. The maximum and minimum risk values for the drinking pathway were 4.61×10-6 and 0, respectively. In general, the highest and lowest daily exposure risks of benzene for the three pathways were 4.33×10-3 and 1.26×10-4 respectively, which exceeded the limit of US EPA water quality criteria (1×10-4). |
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| Keywords: | benzene human health risk tap water assessment |
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