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首页> 外文期刊>Revista de Saúde Pública >Human risk assessment of benzene after a gasoline station fuel leak
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Human risk assessment of benzene after a gasoline station fuel leak

机译：加油站燃料泄漏后苯的人为风险评估

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OBJECTIVE: To assess the health risk of exposure to benzene for a community affected by a fuel leak. METHODS: Data regarding the fuel leak accident with, which occurred in the Brasilia, Federal District, were obtained from the Fuel Distributor reports provided to the environmental authority. Information about the affected population (22 individuals) was obtained from focal groups of eight individuals. Length of exposure and water benzene concentration were estimated through a groundwater flow model associated with a benzene propagation model. The risk assessment was conducted according to the Agency for Toxic Substances and Disease Registry methodology. RESULTS: A high risk perception related to the health consequences of the accident was evident in the affected community (22 individuals), probably due to the lack of assistance and a poor risk communication from government authorities and the polluting agent. The community had been exposed to unsafe levels of benzene ( 5 µg/L) since December 2001, five months before they reported the leak. The mean benzene level in drinking water (72.2 µg/L) was higher than that obtained by the Fuel Distributer using the Risk Based Corrective Action methodology (17.2 µg/L).The estimated benzene intake from the consumption of water and food reached a maximum of 0.0091 µg/kg bw/day (5 x 10-7 cancer risk per 106 individuals). The level of benzene in water vapor while showering reached 7.5 µg/m3 for children (1 per 104 cancer risk). Total cancer risk ranged from 110 to 200 per 106 individuals. CONCLUSIONS: The population affected by the fuel leak was exposed to benzene levels that might have represented a health risk. Local government authorities need to develop better strategies to respond rapidly to these types of accidents to protect the health of the affected population and the environment.
机译：目的：评估受燃料泄漏影响的社区接触苯的健康风险。方法：有关联邦州巴西利亚发生的燃油泄漏事故的数据，是从提供给环境当局的燃油分销商报告中获得的。有关受影响人群（22个人）的信息是从8个人的焦点小组获得的。通过与苯传播模型相关的地下水流模型，估算了暴露时间和水苯浓度。根据有毒物质和疾病登记机构的方法进行了风险评估。结果：在受影响的社区（22人）中，与事故的健康后果相关的高风险感知显而易见，这可能是由于缺乏援助以及政府机构和污染源之间的风险沟通不力所致。自2001年12月（报告泄漏前五个月）以来，该社区已接触不安全水平的苯（> 5 µg / L）。饮用水中的平均苯水平（72.2 µg / L）高于燃油分配器使用基于风险的纠正措施方法获得的平均苯水平（17.2 µg / L）。估计的水和食物消耗中的苯摄入量达到最大值每天0.0091 µg / kg体重（每106个人5 x 10-7癌症风险）。儿童淋浴时水蒸气中的苯含量达到7.5 µg / m3（每104名癌症风险中的1名）。每106个人的总癌症风险范围为110至200。结论：受燃油泄漏影响的人群暴露于可能危害健康的苯水平。地方政府当局需要制定更好的策略，以对这些类型的事故做出快速反应，以保护受影响人口和环境的健康。

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