Pollution Characteristics and Sources of Carbonaceous Components in PM2.5 in the Guanzhong Area

被引：1

作者：

Kang B.-R. ^{[1
]}

Liu L.-Z. ^{[1
]}

Liu H.-W. ^{[2
]}

Li Y.-Y. ^{[3
]}

Ai S.-S. ^{[1
]}

Cao N. ^{[1
]}

Lei Y. ^{[1
]}

机构：

[1] School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an

[2] Xi'an Environmental Monitoring Station, Xi'an

[3] Shaanxi Environmental Monitoring Center, Xi'an

来源：

Huanjing Kexue/Environmental Science | 2019年 / 40卷 / 08期

关键词：

Element carbon; Fine particulate matter; Guanzhong area; Organic carbon; Positive matrix factorization(PMF);

D O I：

10.13227/j.hjkx.201810189

中图分类号：

学科分类号：

摘要：

In order to study the pollution characteristics and sources of fine particulate matter in the Guanzhong area of China, PM2.5samples were collected and observed by hand from September 4, 2017 to January 19, 2018 at five sites (XA, WN, TCH, BJ and XY). The carbonaceous component of these samples was analyzed by thermal-optical transmission, which showed that the average concentrations of OC and EC in the fine particulate matter were (14.48±7.86) μg•m-3 and (2.27±0.95) μg•m-3, respectively, Percentages of OC and EC were 18.04% and 2.99%, respectively. Compared with other cities, the measured levels of pollution in the Guanzhong areas were more severe. The spatial distribution of percentage of carbon component in PM2.5 was XY>WN>XA>BJ>TCH, and the concentrations in winter were higher than in autumn. The correlation between OC and EC was significant (R2=0.79), which indicates a common source. The highest proportion of OC1 was 23.44%. The concentration of the carbonaceous component from high to low was OC1>EC2>EC3>OC4>EC1>OC2>OC3>EC4>EC6>EC5. The results of PMF modeling show that the four main contributing sources of carbon components in pollution in this area are biomass combustion and coal-burning, gasoline vehicle exhaust emissions, diesel vehicle exhaust emissions, and road dust, contribution 48.63%, 23.07%, 18.82%, and 9.47%, respectively. Furthermore, there were clear differences in the pollution structure at each study site. © 2019, Science Press. All right reserved.

引用

页码：3431 / 3437

页数：6

共 23 条

[1] Zhang C.Z., Ding C., Zhou B.H., Et al., Pollution characteristics of carbon aerosol in PM2.5 of Xi'an during winter and summer, Chinese Journal of Environmental Engineering, 7, 4, pp. 1477-1481, (2013)
[2] Sharma S., Brook J.R., Cachier H., Et al., Light absorption and thermal measurements of black carbon in different regions of Canada, Journal of Geophysical Research: Atmospheres, 107, D24, (2002)
[3] Cao J.J., Lee S.C., Ho K.F., Et al., Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China, Atmospheric Environment, 38, 27, pp. 4447-4456, (2004)
[4] Tang X.L., Bi X.H., Chen Y.J., Et al., Study on the size distribution of organic carbon (OC) and elemental carbon (EC) in the aerosol, Research of Environmental Sciences, 19, 1, pp. 104-108, (2006)
[5] Du B.H., Huang X.F., He L.Y., Et al., Seasonal and spatial variations of carbon fractions in PM2.5 in Ningbo and the estimation of secondary organic carbon, Environmental Science, 36, 9, pp. 3128-3134, (2015)
[6] Bian Q.J., Alharbi B., Shareef M.M., Et al., Sources of PM2.5 carbonaceous aerosol in Riyadh, Saudi Arabia, Atmospheric Chemistry and Physics, 18, 6, pp. 3969-3985, (2018)
[7] Tian P.S., Cao J.J., Han Y.M., Et al., Pollution characteristics and sources of carbonaceous aerosol in PM2.5 during winter in Guanzhong area, Environmental Science, 37, 2, pp. 427-433, (2016)
[8] Wang F., Han J., Zhang J., Et al., Simple analysis of pollution characteristics of organic carbon and elemental carbon in PM2.5 in the atmosphere of Xi'an city, Environmental Protection Science, 41, 2, pp. 80-85, (2015)
[9] Chow J.C., Watson J.G., Crow D., Et al., Comparison of IMPROVE and NIOSH carbon measurements, Aerosol Science and Technology, 34, 1, pp. 23-34, (2001)
[10] Ji D.S., Zhang J.K., He J., Et al., Characteristics of atmospheric organic and elemental carbon aerosols in urban Beijing, China, Atmospheric Environment, 125, pp. 293-306, (2016)

← 1 2 3 →