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南京市大气颗粒物中多环芳烃变化特征
引用本文:杨丽莉,王美飞,张予燕,胡恩宇,吴丽娟.南京市大气颗粒物中多环芳烃变化特征[J].中国环境监测,2016,32(1):53-57.
作者姓名:杨丽莉  王美飞  张予燕  胡恩宇  吴丽娟
作者单位:南京市环境监测中心站, 江苏 南京 210013,南京市环境监测中心站, 江苏 南京 210013,南京市环境监测中心站, 江苏 南京 210013,南京市环境监测中心站, 江苏 南京 210013,南京市环境监测中心站, 江苏 南京 210013
基金项目:南京市科学技术局人才培养项目(200905019);南京市环境保护局科研项目(200505)
摘    要:逐月采集南京市大气中不同粒径的颗粒物,采用HPLC分析了2010年每个月PM_(10)和PM_(2.5)颗粒物样品中的多环芳烃(PAHs)的种类和浓度水平。结果表明:PM_(10)中PAHs年均值为25.07 ng/m~3,范围为11.03~53.56 ng/m3;PM_(2.5)中PAHs年均值为19.04 ng/m~3,范围为10.82~36.43 ng/m~3。PM_(10)和PM_(2.5)中PAHs总体浓度有着相似的变化趋势,呈现凹形变化曲线;在南京市大气颗粒物中吸附的PAHs大部分以5~6环的高环数组分为主,大部分PAHs和∑PAHs的相关性较好,年度变化幅度不大,分析结果表明,颗粒物中PAHs的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的区别。

关 键 词:多环芳烃  PM10  PM2.5  变化特征
收稿时间:2015/1/28 0:00:00
修稿时间:2015/5/23 0:00:00

Distribution Variation Characteristics of Polycyclic Aromatic Hydrocarbons(PAHs)in Airborne Particles of Nanjing
YANG Lili,WANG Meifei,ZHANG Yuyan,HU Enyu and WU Lijuan.Distribution Variation Characteristics of Polycyclic Aromatic Hydrocarbons(PAHs)in Airborne Particles of Nanjing[J].Environmental Monitoring in China,2016,32(1):53-57.
Authors:YANG Lili  WANG Meifei  ZHANG Yuyan  HU Enyu and WU Lijuan
Institution:Nanjing Environment Monitoring Centre, Nanjing 210013, China,Nanjing Environment Monitoring Centre, Nanjing 210013, China,Nanjing Environment Monitoring Centre, Nanjing 210013, China,Nanjing Environment Monitoring Centre, Nanjing 210013, China and Nanjing Environment Monitoring Centre, Nanjing 210013, China
Abstract:PM10 and PM2.5 samples were collected in Nanjing between January 2010 and December 2010.16 EPA priority PAHs were extracted by microwave extraction mothed and were quantified using HPLC. The results showed that the year average concentrations of PAHs in PM10 and PM2.5 were 25.07 ng/m3 and 19.04 ng/m3 respectively, the concentrations ranged from 11.03 ng/m3 to 53.56 ng/m3 in PM10 samples, 10.82 ng/m3 to 36.43 ng/m3 in PM2.5 samples respectively. The variation of PAHs concentrations in PM10 and PM2.5 was similar. The highest concentration of PAHs in PM10 was observed in winter, with the lowest level in summer. 5-6 rings of PAHs were the abundant compounds in PM10 and PM2.5, and the percent of these PAHs in winter and in summer closed. The diagnostic ratios suggested vehicle emission was the predominant sources for particulate PAHs in Nanjing. The characteristics of atmospheric PAHs pollution in Nanjing and the northern city was difference.
Keywords:PAHs  PM10  PM2  5  variation characteristics
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