摘要
2007年12月～2008年1月于我国云南省曲靖燃煤区开展人群多环芳烃(PAHs)的暴露评价研究.采用气相色谱/质谱联用(GC/MS)测定了环境样品中16种PAHs的浓度,对暴露的途径及各种PAHs的来源比例进行了分析,以苯并(a)芘(BaP)致癌当量计算了人群日暴露总量.结果表明,人群日饮食暴露量为0.20μg/d,且与WHO报道的水平相当.日空气暴露量为5.26μg/d,占PAHs日暴露总量的96%,表明空气是当地PAHs暴露的主要来源.用BaP当量剂量评价致癌风险时,BaP从数量比3.08%上升至毒性当量比49.6%,低环PAHs毒性当量所占比例明显下降.当地人群BaP平均日暴露量为5.46μg/d,超过了标准限值3μg/d.PAHs暴露给当地环境和人群健康带来了长期危害.
To assess polycyclic aromatic hydrocarbons（PAHs） exposure,subjects were selected in the area where local residents burn smoky coals in Qujing,Yunnan province. 16 PAHs concentrations of the samples were determined by GC/MS to study status,characteristic and sources of the PAHs. Daily total exposure of local people was analyzed using benzo（a）pyrene （BaP） toxic equivalence factor. Daily intake through food was 0.20μg/d,which was in the range of the data reported by WHO. Daily intake through air was 5.26μg/d,which contributed 96% of the their daily PAHs exposure. Inhalation was the main intake of PAHs. The proportion of the high molecular weight PAHs increased from 3.08% to 49.6% using toxic equivalence factor to assess the carcinogenic risk,while low molecular weight PAHs exhibited much lower toxicity decreased. The daily total exposure to BaP was 5.46μg/d,which was exceeded the limited value 3μg/d. PAHs exposure posed long-term threat to the environment and health of residents.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2010年第10期1413-1418,共6页
China Environmental Science
基金
环境保护部资助项目(2005-2-01)
关键词
多环芳烃
苯并(A)芘
日暴露量
polycyclic aromatic hydrocarbons （PAHs）
benzo（a）pyrene （BaP）
daily total exposure
