Characteristics of secondary inorganic aerosol and sulfate species in size-fractionated aerosol particles in Shanghai
文献类型：期刊论文
| 作者 | Long, SL; Zeng, JR; Li, Y; Bao, LM; Cao, LL; Liu, K; Xu, L; Lin, J; Liu, W; Wang, GH |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2014 |
| 卷号 | 26期号:5页码:1040-1051 |
| 关键词 | sulfate particulate matter XANES haze |
| 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. |
| 学科主题 | Environmental Sciences & Ecology |
| 收录类别 | SCI |
| WOS记录号 | WOS:000335489400011 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225081]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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