环境工程学报2017，Vol.11Issue(9)：5138-5151,14.DOI:10.12030/j.cjee.201609242
东莞市大气PM10、PM2.5、PM1中多环芳烃/正构烷烃的污染特征和来源解析
Pollution characteristics and source apportionment of PAHs and n-alkane in PM10, PM2.5 and PM1 in Dongguan city, China
摘要
Abstract
The samples of PM10, PM2.5 and PM1 had been collected respectively at the NC site of residential area and the ZT site of industrial area in Dongguan city between August, 2011 and July, 2012.The polycyclic aromatic hydrocarbons (PAHs) and n-alkane in different particles were tested and analyzed.The particle size distribution indicated the highest enrichment of PAHs and n-alkane in PM1 as well as the higher enrichment of n-alkane than PAHs.An analysis of the ring numbers of PAHs showed that the ring number of the predominant PAHs was six in PM1 and four in PM1～2.5 and PM2.5～10.The method of diagnostic ratios of PAHs was used to investigate the sources of PAHs.The results showed that the main sources of PAHs at the NC site were gasoline exhaust, natural gas burning, coal combustion and cooking source.The major sources at the ZT site were diesel exhaust, coal combustion and wood burning.The source apportionment of n-alkane was performed using the methods of carbon maximum number (Cmax) , carbon preference index (CPI) and percentage wax n-alkane (Wwax).The researchfindings showed that fossil fuel combustions were the most important contributor to the production of n-alkane in the particulate matter in Dongguan city.The wax discharge from higher plants was in the second place, with the contribution percentage being between 10.9％ and 28.9％.The contribution percentage of fossil fuel combustions to n-alkane in PM1 was higher than that in PM,～2.5 and PM2.5～10.关键词
东莞市/亚微米粒子PM1/PAHs/正构烷烃/粒径分布/来源解析Key words
Dongguan city/submicron particle PM1/PAHs/n-alkane/size distribution/source apportionment分类
资源环境引用本文复制引用
刘立,胡辉,李娴,黄奂彦,蔡勋江,谭晓辉,陈涛..东莞市大气PM10、PM2.5、PM1中多环芳烃/正构烷烃的污染特征和来源解析[J].环境工程学报,2017,11(9):5138-5151,14.基金项目
国家重点研发计划(2017YFC0210605,2016YFC0206100) （2017YFC0210605,2016YFC0206100）
东莞市环境保护局一般项目(B11A07006201017) （B11A07006201017）
东莞市高等院校科研机构科技计划项目(2011108102040) （2011108102040）
