气候变化领域集成服务门户(CCPortal): Biomass burning in the northern peninsular Southeast Asia: Aerosol chemical profile and potential exposure

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DOI	10.1016/j.atmosres.2019.03.031
	Biomass burning in the northern peninsular Southeast Asia: Aerosol chemical profile and potential exposure
	Pani S.K.; Chantara S.; Khamkaew C.; Lee C.-T.; Lin N.-H.
发表日期	2019
ISSN	0169-8095
起始页码	180
结束页码	195
卷号	224
英文摘要	This study aimed to characterize the PM 2.5 (particulate matter ≤ 2.5 μm in aerodynamic diameter) chemical components obtained at Doi Ang Khang (DAK; high mountain and near-source of biomass-burning (BB) emissions) and Chiang Mai University (CMU; foothill site and an urban location) in northern peninsular Southeast Asia (PSEA) during dry BB season of 2015 through the analysis of water-soluble inorganic ions, organic carbon (OC), and elemental carbon (EC) contents. The 24-h average PM 2.5 levels (μg m −3 ) at DAK (118 ± 36) and CMU (113 ± 45) were about 4 folds greater than the WHO health-based guideline (25 μg m −3 ). Major diagnostics ratios between selected ions and carbonaceous fractions showed the significant BB influence on ambient aerosols. Enriched tracers in collected aerosols, such as NO 3 − , OC3 (evolved at 280–480 °C), and EC1-OP (EC evolved at 580 °C minus the pyrolized OC) confirmed that the samples were influenced by significant BB emissions. OC was the most abundant component in PM 2.5 and the contribution of BB to OC was estimated to be ~90%. For the first time, the conversion factor of OC to organic matter was estimated on the basis of mass closure approach to be 1.7 ± 0.3 and 1.6 ± 0.3 at DAK and CMU, respectively. Effective carbon ratio, which indicates an association between carbonaceous particles and climatic impact, at DAK revealed the significant atmospheric warming due to the presence of more absorbing aerosols attributed to near-source BB emissions at the high mountain site. The estimated inhalation dose of PM 2.5 and EC indicated severe health risk for local inhabitants during their outdoor activities. This study enhances the knowledge of aerosol chemical characterization and also addresses exposure to fine aerosols for local inhabitants during intense BB emissions in northern PSEA. © 2019 Elsevier B.V.
英文关键词	7-SEAS; Aerosol chemistry; Effective carbon ratio; Exposure dose; OC to OM conversion factor; PM 2.5
语种	英语
scopus关键词	Chemical analysis; Health risks; Organic carbon; Risk perception; Urban growth; 7-SEAS; Aerosol chemistry; Carbon ratio; Conversion factor; Exposure dose; PM2.5; Aerosols; aerosol; atmospheric chemistry; biomass burning; carbon; guideline; health risk; organic matter; particulate matter; World Health Organization; Southeast Asia
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162183
作者单位	Cloud and Aerosol Laboratory, Department of Atmospheric Sciences, National Central University, Taoyuan, 32001, Taiwan; Environmental Chemistry Research Laboratory, Chemistry Department, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Graduate Institute of Environmental Engineering, National Central University, Taoyuan, 32001, Taiwan
推荐引用方式 GB/T 7714	Pani S.K.,Chantara S.,Khamkaew C.,et al. Biomass burning in the northern peninsular Southeast Asia: Aerosol chemical profile and potential exposure[J],2019,224.
APA	Pani S.K.,Chantara S.,Khamkaew C.,Lee C.-T.,&Lin N.-H..(2019).Biomass burning in the northern peninsular Southeast Asia: Aerosol chemical profile and potential exposure.Atmospheric Research,224.
MLA	Pani S.K.,et al."Biomass burning in the northern peninsular Southeast Asia: Aerosol chemical profile and potential exposure".Atmospheric Research 224(2019).