摘要
用玻璃纤维滤膜采集PM_(2.5)样品,乙腈超声提取-高效液相色谱法分析测量多环芳烃浓度。结果表明:PAHs的浓度变化受到大气降水的影响,夏季浓度最低,冬季浓度最高,PM_(2.5)中PAHs总量月平均变化趋势呈"凹"形变化;PAHs的结构以2~3环、5~6环为主;比值法显示PAHs来源与稳定的排放源相关,机动车排放不容忽视,与北方城市燃煤污染有着较大区别。
PM2.5 samples were collected by glass fiber filtration membrane, the concentrations of polycyclic aromatic hydrocarbons （PAHs） were detected by acetonitrile ultrasonic extraction - high performance liquid chromatography method. The results show that the concentration change of PAHs is afected by atmospheric precipitation,the concentration in summer is the lowest,in winter is the highest, the monthly mean change trend of PAHs in PM2.5 is ＂concave＂.The structure of PAHs is mainly composed of 2-3 rings and 5 -6 rings. The ratio method shows that PAHs sources are related to stable emission sources, and the vehicle emission cannot be ignored. It is quite different from coal burning in northern cities.
作者
崔静
吴鹏
CUI Jing;WU Peng(Nantong environmental monitoring center,Jiangsu Nantong,226006,China)
出处
《干旱环境监测》
2018年第3期119-123,共5页
Arid Environmental Monitoring
