摘要
目的通过检测包头市九原区大气颗粒物中多环芳烃(PAHs)的总浓度、PAHs单体以及不同环数PAHs在采暖期与非采暖期的污染状况,探讨包头市大气颗粒物中PAHs污染的基本特征,为包头市居民健康风险评价提供依据。方法利用KB-1000型大流量采样器,分别于采暖期和非采暖期在九原区连续24 h采集大气颗粒物,利用气相色谱(GC)/质谱(MS)联用仪对颗粒物中的PAHs进行定性和定量检测。结果采暖期大气颗粒物中PAHs的总含量高于非采暖期,差异有统计学意义;在16种优先控制的PAHs中,有10种的含量为采暖期高于非采暖期,差异有统计学意义;检测的PAHs以4和5环为主;九原区PAHs主要来源于燃煤排放。结论九原区采暖期PAHs的污染较非采暖期严重;PAHs以中高环为主;PAHs主要来源于燃煤排放。
[ Objective ] By detecting the total concentration of PAHs, the monomer of PAHs and the pollution situation of various rings of PAHs in atmospheric particulates in the heating and non-heating period in Jiuyuan District of Baotou, to explore the basic pollutional characteristics of PAHs in atmospheric particulates in Baotou City, and provide the basis for the Baotou residents＇health risk assessment. [ Methods] The atmospheric particulates were collected continuously 24h in heating and non-heating periods in Ji- uyuan district by using the KB-1000 type high-flow sampler, and PAHs in atmospheric particulates were detected by GC-MS. [ Results] The total content of PAHs in atmospheric particulates in heating period was higher than that in non-heating period, and the difference was statistically significant. In the 16 kinds of precedent-controlled PAHs, the contents of 11 kinds of PAHs in heat- ing period were higher than that in non-heating period, the difference was statistically significant. The detected PAHs were mainly 4-ring and 5-ring; PAHs in Jiuyuan district primarily come from coal-fired emissions. [ Conclusion] The contamination of PAHs in Jiuyuan district in heating period are more serious than that in non- heating period. PAHs are mainly the high ring and come from coal-fired emissions.
出处
《职业与健康》
CAS
2014年第9期1243-1246,共4页
Occupation and Health
基金
内蒙古教育厅项目(项目编号:NJZZ12214)
内蒙古自然科学基金项目(项目编号:2012MS1108)
关键词
多环芳烃
大气颗粒物
采暖期
非采暖期
Polycyclic aromatic hydrocarbons
Atmospheric particulates
Heating period
Non-heating period
