气候变化领域集成服务门户(CCPortal): Source apportionment of water-soluble oxidative potential in ambient total suspended particulate from Bangkok: Biomass burning versus fossil fuel combustion

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DOI	10.1016/j.atmosenv.2020.117624
	Source apportionment of water-soluble oxidative potential in ambient total suspended particulate from Bangkok: Biomass burning versus fossil fuel combustion
	Wang J.; Jiang H.; Jiang H.; Mo Y.; Geng X.; Li J.; Mao S.; Bualert S.; Ma S.; Li J.; Zhang G.
发表日期	2020
ISSN	1352-2310
卷号	235
英文摘要	Oxidative potential (OP) is a promising and integrative metric for assessing health effects associated with exposure to ambient particulate matter. Source apportionment of water-soluble OP in aerosols is the basis for formulating pollution control policies. In this study, we collected total suspended particulate (TSP) samples in Bangkok, on the Indochinese Peninsula, where pollution levels are high due to annual biomass burning. We analyzed the chemical composition of the samples and performed dithiothreitol (DTT) assays to measure their OP. We observed higher TSP mass and chemical species concentrations among samples collected in the dry seasons due to biomass burning and fossil fuel combustion. The seasonally averaged volume-normalized OP (OPv) was highest in the dry I season (January to March), which was consistent with higher TSP concentrations during this period. The mass-normalized OP (OPm) decreased as TSP concentration increased due to the unaccounted fractions dominating the increase in TSP and/or the inhibiting effects of redox-active metals. Transition metals (e.g., Cu, V, and Ni), hopanes/steranes, and carbonaceous species (organic carbon and elemental carbon) correlated well with OPm. Source apportionment using the Positive Matrix Factorization model (PMF) and multiple linear regression analysis revealed that, although biomass burning accounted for the highest contribution (mean: 26%) to TSP concentration, the dominant source of water-soluble OPv of TSP was fossil fuel combustion, which included land fossil fuel combustion (63%) and ship emissions (16%). This significant contribution of fossil fuel combustion was determined by the transition metals Cu and V which were the main drivers of DTT activity in TSP. © 2020 Elsevier Ltd
英文关键词	Indochinese peninsula; Metals; Oxidative potential; Source apportionment; TSP
语种	英语
scopus关键词	Biomass; Chemical analysis; Combustion; Factorization; Linear regression; Organic carbon; Particles (particulate matter); Redox reactions; Transition metals; Water pollution; Water pollution control; Ambient particulate Matter; Chemical compositions; Chemical species concentrations; Fossil fuel combustion; Multiple linear regression analysis; Positive matrix factorization models; Source apportionment; Total suspended particulates; Fossil fuels; biomass burning; chemical composition; combustion; fossil fuel; health impact; oxidation; particulate matter; pollution control; regression analysis; solubility; source apportionment; suspended load; Bangkok; Central Region [Thailand]; Indochina; Krung Thep Mahanakhon; Thailand
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129429
作者单位	State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100039, China; Faculty of Environment, Kasetsart University, Bangkok, 10900, Thailand; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510655, China
推荐引用方式 GB/T 7714	Wang J.,Jiang H.,Jiang H.,et al. Source apportionment of water-soluble oxidative potential in ambient total suspended particulate from Bangkok: Biomass burning versus fossil fuel combustion[J],2020,235.
APA	Wang J..,Jiang H..,Jiang H..,Mo Y..,Geng X..,...&Zhang G..(2020).Source apportionment of water-soluble oxidative potential in ambient total suspended particulate from Bangkok: Biomass burning versus fossil fuel combustion.Atmospheric Environment,235.
MLA	Wang J.,et al."Source apportionment of water-soluble oxidative potential in ambient total suspended particulate from Bangkok: Biomass burning versus fossil fuel combustion".Atmospheric Environment 235(2020).