Trace element compositions in PM2.5 after the action for comprehensive control of air pollution in Beijing

被引：0

作者：

Shao L. ^{[1
]}

Chang L. ^{[1
]}

Zhang M. ^{[1
]}

Li J. ^{[1
]}

Li Y. ^{[1
]}

Li W. ^{[1
]}

Feng X. ^{[1
]}

机构：

[1] State Key Laboratory of Coal Resources and Safe Mining, School of Geosciences and Surveying Engineering, China University of Mining and Technology, Beijing

来源：

Earth Science Frontiers | 2019年 / 26卷 / 06期

关键词：

Beijing City; ICP-MS; PM[!sub]2.5[!/sub; The action for comprehensive control of air pollution; Trace elements;

D O I：

10.13745/j.esf.sf.2019.11.31

中图分类号：

学科分类号：

摘要：

We investigated by ICP-MS the trace elemental compositions of PM2.5 in Beijing after the implementation of the 'action plan' for comprehensive control of air pollution. The results showed that PM2.5 mainly contained 7 trace elements, Zn, Mn, Ba, Pb, Cr, Cu and Ti, with Zn ranked the highest in content. The water-soluble form of Zn, Cd, Tl, Cs or Rb accounted for more than 80% of its total content in PM2.5, revealing that most trace elements occur water-soluble in fine particles. Interestingly, trace elemental contents (10-6) in PM2.5 samples decreased with increasing PM2.5 pollution levels, whereas, mass concentrations (ng•m-3) increased with increasing pollution levels, the same trend as PM2.5 mass concentration. It indicated that the content of trace elements in PM2.5per unit mass is only related to the composition of particles, not the concentration of particles. The trace elements in PM2.5 during the sampling period were mainly from soil dust (48.27%), combustion sources and industrial emissions (16.16%) and vehicle brake and tire wear (10.03%), followed by automobile exhaust (5.84%), construction dust (4.88%) and other sources (3.68%). Compared with the results before the action for comprehensive air pollution control, the mass concentration of trace elements in PM2.5 after the action decreased significantly, with the greatest decrease of 80.3% at high pollution level. © 2019, Editorial Office of Earth Science Frontiers. All right reserved.

引用

页码：298 / 308

页数：10

共 22 条

[1] Wang W., Shao L., Xing J., Et al., Physicochemical characteristics of individual aerosol particles during the 2015 China Victory Day Parade in Beijing, Atmosphere, 9, 2, pp. 1-10, (2018)
[2] Wang W., Shao L., Guo M., Et al., Physicochemical properties of individual airborne particles in Beijing during pollution periods, Aerosol and Air Quality Research, 17, 12, pp. 3209-3219, (2017)
[3] Cheng S., Lang J., Ying Z., Et al., A new monitoring-simulation-source apportionment approach for investigating the vehicular emission contribution to the PM2.5 pollution in Beijing, China, Atmospheric Environment, 79, 7, pp. 308-316, (2013)
[4] Liu Z., Hu B., Wang L., Et al., Seasonal and diurnal variation in particulate matter (PM10 and PM2.5) at an urban site of Beijing: analyses from a 9-year study, Environmental Science & Pollution Research, 22, 1, pp. 627-642, (2015)
[5] Swanson S.M., Partitioning of selected trace elements in coal combustion products from two coal-burning power plants in the United States, International Journal of Coal Geology, 113, 3, pp. 116-126, (2013)
[6] Finkelman R.B., Orem W., Castranova V., Et al., Health impacts of coal and coal use: possible solutions, International Journal of Coal Geology, 50, 1, pp. 425-443, (2002)
[7] Xu M., Yan R., Zheng C., Et al., Status of trace element emission in a coal combustion process: a review, Fuel Processing Technology, 85, 2, pp. 215-237, (2004)
[8] Mohanraj R., Azeez P.A., Priscilla T., Heavy metals in airborne particulate matter of urban Coimbatore, Archives of Environmental Contamination & Toxicology, 47, 2, pp. 162-167, (2004)
[9] Pinkerton K.E., Green F.H., Saiki C., Et al., Distribution of particulate matter and tissue remodeling in the human lung, Environmental Health Perspectives, 108, 11, pp. 1063-1069, (2000)
[10] Jarup L., Hazards of heavy metal contamination, British Medical Bulletin, 68, 1, pp. 167-182, (2003)

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