CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai
Long, SL; Zeng, JR; Li, Y; Bao, LM; Cao, LL; Liu, K; Xu, L; Lin, J; Liu, W; Wang, GH; Yao, J; Ma, CY; Zhao, YD; longshilei@sinap.ac.cn; ly@sinap.ac.cn
2014
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
Volume26Issue:5Pages:1040—1051
AbstractSulfate, nitrate and ammonium (SNA) are the dominant species in secondary inorganic aerosol, and are considered an important factor in regional haze formation. Size-fractionated aerosol particles for a whole year were collected to study the size distribution of SNA as well as their chemical species in Shanghai. SNA mainly accumulated in fine particles and the highest average ratio of SNA to particulate matter (PM) was observed to be 47% in the fine size fraction (0.49-0.95 mu m). Higher sulfur oxidation ratio and nitrogen oxidation ratio values were observed in PM of fine size less than 0.95 mu m. Ion balance calculations indicated that more secondary sulfate and nitrate would be generated in PM of fine size (0.49-0.95 mu m). Sulfur K-edge X-ray absorption near-edge structure (XANES) spectra of typical samples were analyzed. Results revealed that sulfur mainly existed as sulfate with a proportion (atomic basis) more than 73% in all size of PM and even higher at 90% in fine particles. Sulfate mainly existed as (NH4)(2)SO4 and gypsum in PM of Shanghai. Compared to non-haze days, a dramatic increase of (NH4)(2)SO4 content was found in fine particles on haze days only, which suggested the promoting impact of (NH4)(2)SO4 on haze formation. According to the result of air mass backward trajectory analysis, more (NH4)(2)SO4 would be generated during the periods of air mass stagnation. Based on XANES, analysis of sulfate species in size-fractionated aerosol particles can be an effective way to evaluate the impact of sulfate aerosols on regional haze formation.
KeywordRay-absorption Spectroscopy Chemical-composition Source Apportionment Sulfur Speciation Nitrate Formation Ammonium-sulfate Ion Chemistry Pm2.5 China Pollution
Indexed BySCI
Language英语
WOS IDWOS:000335489400011
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14034
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorlongshilei@sinap.ac.cn; ly@sinap.ac.cn
Recommended Citation
GB/T 7714
Long, SL,Zeng, JR,Li, Y,et al. Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(5):1040—1051.
APA Long, SL.,Zeng, JR.,Li, Y.,Bao, LM.,Cao, LL.,...&ly@sinap.ac.cn.(2014).Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(5),1040—1051.
MLA Long, SL,et al."Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.5(2014):1040—1051.
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