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Characterization of carbonaceous fractions in PM2.5 and PM10 over a typical industrial city in central China.
Environ Sci Pollut Res Int. 2019 Jun; 26(17):16855-16867.ES

Abstract

Aerosol samples of PM2.5 and PM10 were collected every 6 days from March 2012 to February 2013 in Huangshi, a typical industrial city in central China, to investigate the characteristics, relationships, and sources of carbonaceous species. The PM2.5 and PM10 samples were analyzed for organic carbon (OC), elemental carbon (EC), char, and soot using the thermal/optical reflectance (TOR) method following the IMPROVE_A protocol. PM2.5 and PM10 concentrations ranged from 29.37 to 501.43 μg m-3 and from 50.42 to 330.07 μg m-3, with average levels of 104.90 and 151.23 μg m-3, respectively. The 24-h average level of PM2.5 was about three times the US EPA standard of 35 μg m-3, and significantly exceeds the Class II National Air Quality Standard of China of 75 μg m-3. The seasonal cycles of PM mass and OC concentrations were higher during winter than in summer. EC and char concentrations were generally highest during winter but lowest in spring, while higher soot concentrations occurred in summer. This seasonal variation could be attributed to different seasonal meteorological conditions and changes in source contributions. Strong correlations between OC and EC were found for both PM2.5 and PM10 in winter and fall, while char and soot showed a moderate correlation in summer and winter. The average OC/EC ratios were 5.11 and 4.46 for PM2.5 and PM10, respectively, with individual OC/EC ratios nearly always exceeding 2.0. Higher char/soot ratios during the four seasons indicated that coal combustion and biomass burning were the major sources for carbonaceous aerosol in Huangshi. Contrary to expectations, secondary organic carbon (SOC) which is estimated using the EC tracer method exhibited spring maximum and summer minimum, suggesting that photochemical activity is not a leading factor in the formation of secondary organic aerosols in the study area. The contribution of SOC to OC concentration for PM2.5 and PM10 were 47.33 and 45.38%, respectively, implying that SOC was an important component of OC mass. The serious air pollution in haze-fog episode was strongly correlated with the emissions of pollutants from biomass burning and the meteorological conditions.

Authors+Show Affiliations

Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China. zhancl@ieecas.cn.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.School of Tropical Eco-environment Protection, Hainan Tropical Ocean University, Sanya, 572022, China.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.Environmental Science and Engineering Collage, Hubei Polytechnic University, Huangshi, 435003, China.Key Laboratory of Aerosol Chemistry and Physics (KLACP), Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China. Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29047059

Citation

Zhan, Changlin, et al. "Characterization of Carbonaceous Fractions in PM2.5 and PM10 Over a Typical Industrial City in Central China." Environmental Science and Pollution Research International, vol. 26, no. 17, 2019, pp. 16855-16867.
Zhan C, Zhang J, Zheng J, et al. Characterization of carbonaceous fractions in PM2.5 and PM10 over a typical industrial city in central China. Environ Sci Pollut Res Int. 2019;26(17):16855-16867.
Zhan, C., Zhang, J., Zheng, J., Yao, R., Wang, P., Liu, H., Xiao, W., Liu, X., & Cao, J. (2019). Characterization of carbonaceous fractions in PM2.5 and PM10 over a typical industrial city in central China. Environmental Science and Pollution Research International, 26(17), 16855-16867. https://doi.org/10.1007/s11356-017-9970-9
Zhan C, et al. Characterization of Carbonaceous Fractions in PM2.5 and PM10 Over a Typical Industrial City in Central China. Environ Sci Pollut Res Int. 2019;26(17):16855-16867. PubMed PMID: 29047059.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of carbonaceous fractions in PM2.5 and PM10 over a typical industrial city in central China. AU - Zhan,Changlin, AU - Zhang,Jiaquan, AU - Zheng,Jingru, AU - Yao,Ruizhen, AU - Wang,Ping, AU - Liu,Hongxia, AU - Xiao,Wensheng, AU - Liu,Xianli, AU - Cao,Junji, Y1 - 2017/10/18/ PY - 2017/05/01/received PY - 2017/08/15/accepted PY - 2017/10/20/pubmed PY - 2019/8/1/medline PY - 2017/10/20/entrez KW - Elemental carbon (EC) KW - Organic carbon (OC) KW - PM10 KW - PM2.5 KW - Source SP - 16855 EP - 16867 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 26 IS - 17 N2 - Aerosol samples of PM2.5 and PM10 were collected every 6 days from March 2012 to February 2013 in Huangshi, a typical industrial city in central China, to investigate the characteristics, relationships, and sources of carbonaceous species. The PM2.5 and PM10 samples were analyzed for organic carbon (OC), elemental carbon (EC), char, and soot using the thermal/optical reflectance (TOR) method following the IMPROVE_A protocol. PM2.5 and PM10 concentrations ranged from 29.37 to 501.43 μg m-3 and from 50.42 to 330.07 μg m-3, with average levels of 104.90 and 151.23 μg m-3, respectively. The 24-h average level of PM2.5 was about three times the US EPA standard of 35 μg m-3, and significantly exceeds the Class II National Air Quality Standard of China of 75 μg m-3. The seasonal cycles of PM mass and OC concentrations were higher during winter than in summer. EC and char concentrations were generally highest during winter but lowest in spring, while higher soot concentrations occurred in summer. This seasonal variation could be attributed to different seasonal meteorological conditions and changes in source contributions. Strong correlations between OC and EC were found for both PM2.5 and PM10 in winter and fall, while char and soot showed a moderate correlation in summer and winter. The average OC/EC ratios were 5.11 and 4.46 for PM2.5 and PM10, respectively, with individual OC/EC ratios nearly always exceeding 2.0. Higher char/soot ratios during the four seasons indicated that coal combustion and biomass burning were the major sources for carbonaceous aerosol in Huangshi. Contrary to expectations, secondary organic carbon (SOC) which is estimated using the EC tracer method exhibited spring maximum and summer minimum, suggesting that photochemical activity is not a leading factor in the formation of secondary organic aerosols in the study area. The contribution of SOC to OC concentration for PM2.5 and PM10 were 47.33 and 45.38%, respectively, implying that SOC was an important component of OC mass. The serious air pollution in haze-fog episode was strongly correlated with the emissions of pollutants from biomass burning and the meteorological conditions. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/29047059/Characterization_of_carbonaceous_fractions_in_PM2_5_and_PM10_over_a_typical_industrial_city_in_central_China_ L2 - https://dx.doi.org/10.1007/s11356-017-9970-9 DB - PRIME DP - Unbound Medicine ER -