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Chemical composition and sources of PM10 and PM2.5 aerosols in Guangzhou, China.
Environ Monit Assess 2006; 119(1-3):425-39EM

Abstract

Aerosol samples of PM10 and PM2.5 are collected in summertime at four monitoring sites in Guangzhou, China. The concentrations of organic and elemental carbons (OC/EC), inorganic ions, and elements in PM10 and PM2.5 are also quantified. Our study aims to: (1) characterize the particulate concentrations and associated chemical species in urban atmosphere (2) identify the potential sources and estimate their apportionment. The results show that average concentration of PM2.5 (97.54 microg m(-3)) in Guangzhou significantly exceeds the National Ambient Air Quality Standard (NAAQS) 24-h average of 65 microg m(-3). OC, EC, Sulfate, ammonium, K, V, Ni, Cu, Zn, Pb, As, Cd and Se are mainly in PM2.5 fraction of particles, while chloride, nitrate, Na, Mg, Al, Fe, Ca, Ti and Mn are mainly in PM2.5-10 fraction. The major components such as sulfate, OC and EC account for about 70-90% of the particulate mass. Enrichment factors (EF) for elements are calculated to indicate that elements of anthropogenic origins (Zn, Pb, As, Se, V, Ni, Cu and Cd) are highly enriched with respect to crustal composition (Al, Fe, Ca, Ti and Mn). Ambient and source data are used in the multi-variable linearly regression analysis for source identification and apportionment, indicating that major sources and their apportionments of ambient particulate aerosols in Guangzhou are vehicle exhaust by 38.4% and coal combustion by 26.0%, respectively.

Authors+Show Affiliations

State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, PR China. wangxh@gig.ac.cnNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16741816

Citation

Wang, Xinhua, et al. "Chemical Composition and Sources of PM10 and PM2.5 Aerosols in Guangzhou, China." Environmental Monitoring and Assessment, vol. 119, no. 1-3, 2006, pp. 425-39.
Wang X, Bi X, Sheng G, et al. Chemical composition and sources of PM10 and PM2.5 aerosols in Guangzhou, China. Environ Monit Assess. 2006;119(1-3):425-39.
Wang, X., Bi, X., Sheng, G., & Fu, J. (2006). Chemical composition and sources of PM10 and PM2.5 aerosols in Guangzhou, China. Environmental Monitoring and Assessment, 119(1-3), pp. 425-39.
Wang X, et al. Chemical Composition and Sources of PM10 and PM2.5 Aerosols in Guangzhou, China. Environ Monit Assess. 2006;119(1-3):425-39. PubMed PMID: 16741816.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical composition and sources of PM10 and PM2.5 aerosols in Guangzhou, China. AU - Wang,Xinhua, AU - Bi,Xinhui, AU - Sheng,Guoying, AU - Fu,Jiamo, Y1 - 2006/06/02/ PY - 2005/06/21/received PY - 2005/08/23/accepted PY - 2006/6/3/pubmed PY - 2007/2/27/medline PY - 2006/6/3/entrez SP - 425 EP - 39 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 119 IS - 1-3 N2 - Aerosol samples of PM10 and PM2.5 are collected in summertime at four monitoring sites in Guangzhou, China. The concentrations of organic and elemental carbons (OC/EC), inorganic ions, and elements in PM10 and PM2.5 are also quantified. Our study aims to: (1) characterize the particulate concentrations and associated chemical species in urban atmosphere (2) identify the potential sources and estimate their apportionment. The results show that average concentration of PM2.5 (97.54 microg m(-3)) in Guangzhou significantly exceeds the National Ambient Air Quality Standard (NAAQS) 24-h average of 65 microg m(-3). OC, EC, Sulfate, ammonium, K, V, Ni, Cu, Zn, Pb, As, Cd and Se are mainly in PM2.5 fraction of particles, while chloride, nitrate, Na, Mg, Al, Fe, Ca, Ti and Mn are mainly in PM2.5-10 fraction. The major components such as sulfate, OC and EC account for about 70-90% of the particulate mass. Enrichment factors (EF) for elements are calculated to indicate that elements of anthropogenic origins (Zn, Pb, As, Se, V, Ni, Cu and Cd) are highly enriched with respect to crustal composition (Al, Fe, Ca, Ti and Mn). Ambient and source data are used in the multi-variable linearly regression analysis for source identification and apportionment, indicating that major sources and their apportionments of ambient particulate aerosols in Guangzhou are vehicle exhaust by 38.4% and coal combustion by 26.0%, respectively. SN - 0167-6369 UR - https://www.unboundmedicine.com/medline/citation/16741816/Chemical_composition_and_sources_of_PM10_and_PM2_5_aerosols_in_Guangzhou_China_ L2 - https://doi.org/10.1007/s10661-005-9034-3 DB - PRIME DP - Unbound Medicine ER -