摘要
在南昌市设立了5个不同功能区采样点,分别为居民区、工业区、商业区、交通干线区以及郊区,于2008年夏季进行PM2.5采样,对样品进行测定和分析后,通过因子分析法判断PM2.5中多环芳烃(PAHs)的主要污染源,再利用多元线性回归法确定各主要污染源对PAHs的贡献率。结果表明,南昌市夏季PM2.5中PAHs的主要污染源为车辆排放源、高温加热源、燃煤污染源,它们对PAHs的贡献率分别为37.9%、28.2%和22.0%;要控制南昌市夏季PM2.5中的PAHs,主要是要对机动车尾气排放量进行控制,并加强机动车尾气治理工作。
Series of PM2.5 samples were collected in the 5 function areas of traffic center, industrial area, commercial area, residential area and suburb in summer of Nanchang. The PAHs content in these PM2.5 samples was detected by HPLC. Based on the determined data at various sampling areas, the main sources of PAHs in PM2.5 were estimated by principal component analysis method and factor analysis method, and the contributions of various pollution sources to PAHs were calculated by multiple regress method. Results showed that the main pollution sources of PAHs in PM2.5 in summer of Nanchang were vehicle emission, high-temperature combustion and coal combustion, their contributions to PAHs were 37.9%, 28.2% and 22.0% respectively.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第11期58-62,共5页
Environmental Pollution & Control
关键词
多环芳烃
PM2.5
因子分析法
多元线性回归法
源解析
polycyclic aromatic hydrocarbons （PAHs）
PM2.5
factor analysis method
multiple regress method
source apportionment
