Molecular Markers of Secondary Organic Aerosol in Mumbai, India
文献类型：SCI/SSCI论文
| 作者 | Fu P. Q.; Aggarwal, S. G.; Chen, J. ; Li, J.; Sun, Y. L.; Wang, Z. F.; Chen, H. S.; Liao, H.; Ding, A. J.; Umarji, G. S.
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| 发表日期 | 2016 |
| 关键词 | boreal forest aerosols atmospheric aerosols oxidation-products alpha-pinene isoprene photooxidation diel variations pm2.5 aerosols southern-ocean tracers summer |
| 英文摘要 | Biogenic secondary organic aerosols (SOA) are generally considered to be more abundant in summer than in winter. Here, polar organic marker compounds in urban background aerosols from Mumbai were measured using gas chromatography-mass spectrometry. Surprisingly, we found that concentrations of biogenic SOA tracers at Mumbai were several times lower in summer (8-14 June 2006; wet season; n = 14) than in winter (13-18 February 2007; dry season; n = 10). Although samples from less than 10% of the season are extrapolated to the full season, such seasonality may be explained, by the predominance of the southwest summer monsoon, which brings clean marine air masses to Mumbai. While heavy rains are an important contributor to aerosol removal during the monsoon season, meteorological data (relative humidity and T) suggest no heavy rains occurred during our sampling period. However, in winter, high levels of SOA and their day/night differences suggest significant contributions of continental aerosols through long-range transport together with local sources. The winter/summer pattern of SOA loadings was further supported by results from chemical transport models (NAQPMS and GEOS-Chem). Furthermore, our study suggests that monoterpene- and sesquiterpene-derived secondary organic carbon. (SOC) were more significant than those of isoprene- and toluene-SOC at Mumbai. |
| 出处 | Environmental Science & Technology |
| 卷 | 50 |
| 期 | 9 |
| 页 | 4659-4667 |
| 语种 | 英语 |
| ISSN号 | 0013-936X |
| DOI标识 | 10.1021/acs.est.6b00372 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/42940]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Fu P. Q.,Aggarwal, S. G.,Chen, J.,et al. Molecular Markers of Secondary Organic Aerosol in Mumbai, India. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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