Volume 16, No. 12, December 2016, Pages 3222-3229 PDF(292 KB)
Analysis of the Effect of Meteorological Factors on PM2.5-Associated PAHs during Autumn-Winter in Urban Nanchang
Xiaojun Liu1, Chunmei Li1, Hong Tu2, Yanyan Wu3, Chen Ying2, Qing Huang1, Sheng Wu1, Qinghong Xie3, Zhaokang Yuan1, Yuanan Lu1,3
1 School of Public Health, Nanchang University, Nanchang, Jiangxi 330006, China
2 Department of Malaria, National Institute of Parasitic Disease, Chinese Center for Disease Control and Prevention, Huangpu, Shanghai 200023, China
3 Department of Public Health Sciences, University of Hawaii at Mānoa, Honolulu, Hawaii 96822, USA
- The PM2.5 Mass concentration in fall and winter of Nanchang was over the national standard.
- 1st study to determine the association of PM2.5 with PAHs in Nanchang of China.
- Analysis of meteorological factors for their effect on the concentration and variation of PCA.
- 15 types of PAHs were detected to be over the "ambient air quality standard" of China.
- Demonstrated the PAH was affected by daily temperature but not daily wind and rainfall.
The objectives of this study were to examine the association between PM2.5-associated polycyclic aromatic hydrocarbons (PAHs) and their meteorological factors, and the relationship between PM2.5-associated PAH concentrations and temperature, air pressure and air humidity. Data collected by Center for Disease Control (CDC) in Nanchang urban areas during the fall and winter seasons of 2014–2015 were analyzed by using high performance liquid chromatography (HPLC). Our study showed that the PM2.5 mass concentration had a mean of 0.088 µg m–3. Our results showed that the total concentration of PAHs in Nanchang was 22.54 ng m–3 (RSD: 8.50) and 15 different types of PAHs examined in this study all exceeded the China national standard. Multiple regression analysis revealed that the daily average concentration of total PAH was significantly associated with the temperature and daily minimum humidity (p < 0.05), but not daily wind speed and rainfall. Principal component analysis and characteristic ratio study indicated that the source of PAHs in PM2.5 were mainly from vehicle exhaust and coal and gas combustion in Nanchang.
PM2.5; Meteorological factors; Polycyclic Aromatic Hydrocarbons (PAHs); HPLC.