Determination and source apportionment of aromatic acids in PM2.5 from the northern suburb of Nanjing in winter

被引：5
作者：
Zhang Y.-F. [1 ,2 ]
Ma Y. [1 ,2 ]
Qi L. [3 ]
Wang Z. [4 ]
Wang L.-P. [1 ,2 ]
Zhu L. [1 ,2 ]
机构：
[1] School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing
[2] Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing
[3] School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing
[4] Changzhou Environmental Monitoring Center, Changzhou
来源：
Huanjing Kexue/Environmental Science | 2016年 / 37卷 / 07期
关键词：
Benzene polycarboxylic acids; Correlation analysis; LC-MS; PCA/APCS; Source apportionment;
D O I：
10.13227/j.hjkx.2016.07.004
中图分类号：
学科分类号：
摘要：
Atmospheric particulate samples of PM2.5 were collected from the northern suburb of Nanjing in December, 2014, and a LC-MS method was optimized for the determination of aromatic acids in PM2.5; The concentrations of major water-soluble ions, organic carbon and elemental carbon were also determined. The quantification results showed that the average total concentration of five aromatic acids we have determined was (50.01±16.05) ng·m-3, and the average concentrations of terephthalic acid, phthalic acid, trimellitic acid, 4-methylphthalic acid and iso-phthalic acid were (34.54±12.79), (8.14±3.34), (2.27±1.39), (1.68±0.77) and (1.08±0.43) ng·m-3, respectively. The different source apportionments of atmospheric particulate were analyzed by principal component analysis/absolute principal component scores (PCA/APCS) receptor model. The results of source apportionment showed that the main sources of Phthalic acid, Trimellitic acid and 4-methylphthalic acid were mainly secondary transformation, and primary emissions such as vehicle exhaust contributed less to Trimellitic acid; Secondary transformation and biomass burning made the most significant contributions to iso-Phthalic acid and vehicle exhaust contributed less; The sources of Terephthalic acid were primary emissions such as biomass burning and vehicle exhaust. © 2016, Science Press. All right reserved.
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页码：2436 / 2442
页数：6
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