摘要
目的分析比较我国不同城市大气多环芳烃的污染水平及健康风险。方法于2009年6月和12月检测南京、武汉、深圳、哈尔滨和太原五个城市大气多环芳烃水平,并用苯并(a)芘(BaP)致癌、致突变等效浓度、终身致癌超额危险度和预期寿命损失三个指标来评价五个城市大气PAHs的人群健康风险。结果南京、武汉、深圳、哈尔滨和太原的大气BaP平均浓度分别为50.04、34.54、1.18、2.54和23.88 ng/m3,其中南京、武汉和太原大气BaP浓度均超过我国和WHO的标准限值,哈尔滨和深圳低于我国标准限值,但略高于WHO标准限值。五城市大气PAHs污染水平及其致癌和致突变风险具有一定的季节变化性。南京、武汉、深圳、哈尔滨和太原大气PAHs污染所致成人和儿童的终身致癌超额危险度分别为1.09×10-4和6.98×10-5,5.37×10-5和3.40×10-6,0.80×10-6和0.50×10-6,1.75×10-6和1.11×10-6,1.67×10-5和1.06×10-6,成人预期寿命损失分别为677.19、333.54、4.84、108.54和103.68 min。结论南京、武汉、哈尔滨和太原大气PAHs人群终身致癌超额风险高于可接受水平,而深圳为可接受水平。
Objective To assess the health risk of atmospheric PAHs in five cities of China. Methods The atmospheric particulate PAHs collected in June and December of 2009 in Nanjing, Wuhan, Shenzhen, Harbin and Taiyuan were detected, air PAH-induced health risks to local population were assessed by benzo （a）pyrene （BaP） carcinogenic and mutagenic equivalents, the average life-long cancer risk and loss of life expectancy. Results The average daily concentrations of BaP in Nanjing, Wuhan and Taiyuan were 50.04, 34.54 and 23.88 ng/m^3 respectively,which exceeded the national maximum permissible level of BaP （ 10 ng/m^3 ）, and they were 1.18 and 2.54 ng/m^3 in Shenzhen and Harbin. The average lifetime cancer risks of PAHs for adults and children were 1.09×10^-4 and 6.98×10^-s, 5.37×10^-5 and 3.40×10^-6, 0.80x10^-6 and 0.50×10^-6, 1.75x 10^-6 and 1.11×10^-6, 1.67×10^-5 and 1.06×10^-6 in Nanjing, Wuhan, Shenzhen, Harbin and Taiyuan respectively . The losts of life expectancy in Nanjing, Wuhan, Shenzhen, Harbin and Taiyuan were 677.19, 333.54, 4.84, 108.54 and 103.68 min, respectively. Conclusion The life-long cancer risks of atmospheric PAHs pollution in Nanjing, Wuhan, Harbin and Taiyuan are above the acceptable risk level, while, in Shenzhen, it is below the acceptable risk level.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2011年第9期758-761,共4页
Journal of Environment and Health
基金
"十一五"国家科技支撑计划项目(2006BAI19B01)
国家环境与疾病监测点项目
美国NIH Fogarty项目(5D43 TW007864-09)
国家卫生公益性行业科研专项(201002001)
关键词
多环芳烃
苯并(A)芘
健康风险评价
大气污染
Polycyclic aromatic hydrocarbons
Benzo（a）pyrene
Health risk assessment
Atmospheric air pollution
