Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-735-2020 |
Sources and atmospheric dynamics of organic aerosol in New Delhi, India: insights from receptor modeling | |
Bhandari, Sahil1; Gani, Shahzad2; Patel, Kanan1; Wang, Dongyu S.1; Soni, Prashant3; Arub, Zainab3; Habib, Gazala3; Apte, Joshua S.2; Ruiz, Lea Hildebrandt1 | |
2020-01-22 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:2页码:735-752 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; India |
英文摘要 | Delhi, India, is the second most populated city in the world and routinely experiences some of the highest particulate matter concentrations of any megacity on the planet, posing acute challenges to public health (World Health Organization, 2018). However, the current understanding of the sources and dynamics of PM pollution in Delhi is limited. Measurements at the Delhi Aerosol Supersite (DAS) provide long-term chemical characterization of ambient submicron aerosol in Delhi, with near-continuous online measurements of aerosol composition. Here we report on source apportionment based on positive matrix factorization (PMF), conducted on 15 months of highly time-resolved speciated submicron non-refractory PM1 (NR-PM1) between January 2017 and March 2018. We report on seasonal variability across four seasons of 2017 and interannual variability using data from the two winters and springs of 2017 and 2018. We show that a modified tracer-based organic component analysis provides an opportunity for a real-time source apportionment approach for organics in Delhi. Phase equilibrium modeling of aerosols using the extended aerosol inorganics model (E-AIM) predicts equilibrium gasphase concentrations and allows evaluation of the importance of the ventilation coefficient (VC) and temperature in controlling primary and secondary organic aerosol. We also find that primary aerosol dominates severe air pollution episodes, and secondary aerosol dominates seasonal averages. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000508615500002 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; EXPERIMENT NAMASTE EMISSIONS ; PARTICULATE MATTER ; SOURCE APPORTIONMENT ; AIR-POLLUTION ; CHEMICAL-COMPOSITION ; MASS-SPECTROMETER ; LIGHT-ABSORPTION ; COOKING FIRES ; BLACK CARBON |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278581 |
专题 | 地球科学 |
作者单位 | 1.Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA; 2.Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA; 3.Indian Inst Technol Delhi, Dept Civil Engn, New Delhi, India |
推荐引用方式 GB/T 7714 | Bhandari, Sahil,Gani, Shahzad,Patel, Kanan,et al. Sources and atmospheric dynamics of organic aerosol in New Delhi, India: insights from receptor modeling[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(2):735-752. |
APA | Bhandari, Sahil.,Gani, Shahzad.,Patel, Kanan.,Wang, Dongyu S..,Soni, Prashant.,...&Ruiz, Lea Hildebrandt.(2020).Sources and atmospheric dynamics of organic aerosol in New Delhi, India: insights from receptor modeling.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(2),735-752. |
MLA | Bhandari, Sahil,et al."Sources and atmospheric dynamics of organic aerosol in New Delhi, India: insights from receptor modeling".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.2(2020):735-752. |
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