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;马陈燕; Zhao YD(赵屹东)
刊名JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
2014
卷号26期号:5页码:1040-1051
关键词sulfate particulate matter XANES haze
学科分类Environmental Sciences & Ecology
DOI10.1016/S1001-0742(13)60521-5
英文摘要Sulfate, 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.
收录类别SCI
WOS记录号WOS:000335489400011
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225081
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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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.,...&赵屹东.(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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