干旱区生态环境知识资源中心(Arid): Mineral dust and fossil fuel combustion dominate sources of aerosol sulfate in urban Peru identified by sulfur stable isotopes and water-soluble ions

Arid

DOI	10.1016/j.atmosenv.2021.118482
	Mineral dust and fossil fuel combustion dominate sources of aerosol sulfate in urban Peru identified by sulfur stable isotopes and water-soluble ions
	Olson, Elizabeth; Michalski, Greg; Welp, Lisa; Valdivia, Adrianna E. Larrea; Larico, Juan Reyes; Pen, Jimena Salcedo; Fang, Huan; Gomez, Kento Magara; Li, Jianghanyang
通讯作者	Olson, E (corresponding author), Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA.
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2021
卷号	260
英文摘要	High sulfur emissions in the Central Andes have in the past been attributed to active volcanoes and numerous copper smelting facilities in the region. This study evaluates the contribution of these sources on Arequipa, Peru through an evaluation of aerosol sulfate 834S values and water-soluble ions (WSI). The anthropogenic and natural sources of particulate pollution were determined by aerosol filter sampling from four different locations (urban, suburban, industrial, and rural) providing a view of the spatial variability of aerosols within the city. Sulfate (avg. 2.97 mu m/m3) is the most abundant ion species in the aerosols sampled contributing on average 20% of the molar mass. Ion composition profiles between sampling sites are very similar indicating common sources and high contributions of mobilized local surface salt to the aerosols in this desert region. The regional atmospheric chemistry model (RACM) 0-D run for the area confirms that emissions from fuel combustion sources alone cannot account for the high concentrations of sulfate observed. A combination of the RACM results, WSI data, and a Bayesian 834S isotope mixing model determined that the majority of aerosol sulfates in the area are from mineral dust adding to fossil fuel combustion sources. Mineral dust entrainment in the region is likely elevated by the close proximity of open-pit mining and unpaved roads near the city. Marine organic aerosols and smelting located along the Pacific contribute little to Arequipa's aerosol sulfate concentration. While the influence of volcanic sulfate (9% on average) is low, overall natural sulfate (dust, volcanic, and DMS) accounts for 43% of the aerosol sulfate. Therefore, even though the local environment creates high sulfate background levels, a reduction of sulfate aerosol pollution would be possible if fossil fuel emissions were reduced.
英文关键词	Sulfur isotopes South America Desert aerosols Developing countries Source apportionment High altitude
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000672571900002
WOS关键词	SEA-SALT SULFATE ; ATACAMA DESERT ; CHEMICAL-COMPOSITION ; SO2 OXIDATION ; ATMOSPHERIC DEPOSITION ; SEASONAL-VARIATION ; DIMETHYL SULFIDE ; AIR-POLLUTION ; OCEANIC DMSP ; GLOBAL-MODEL
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362652
作者单位	[Olson, Elizabeth; Michalski, Greg; Welp, Lisa; Fang, Huan; Li, Jianghanyang] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; [Michalski, Greg] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA; [Valdivia, Adrianna E. Larrea; Larico, Juan Reyes; Pen, Jimena Salcedo] Univ Nacl San Agustin Arequipa, Dept Chem Arequipa, Arequipa, Peru; [Gomez, Kento Magara] Univ Pontificia Bolivariana, Dept Environm Engn, Bucaramanga, Colombia
推荐引用方式 GB/T 7714	Olson, Elizabeth,Michalski, Greg,Welp, Lisa,et al. Mineral dust and fossil fuel combustion dominate sources of aerosol sulfate in urban Peru identified by sulfur stable isotopes and water-soluble ions[J],2021,260.
APA	Olson, Elizabeth.,Michalski, Greg.,Welp, Lisa.,Valdivia, Adrianna E. Larrea.,Larico, Juan Reyes.,...&Li, Jianghanyang.(2021).Mineral dust and fossil fuel combustion dominate sources of aerosol sulfate in urban Peru identified by sulfur stable isotopes and water-soluble ions.ATMOSPHERIC ENVIRONMENT,260.
MLA	Olson, Elizabeth,et al."Mineral dust and fossil fuel combustion dominate sources of aerosol sulfate in urban Peru identified by sulfur stable isotopes and water-soluble ions".ATMOSPHERIC ENVIRONMENT 260(2021).