Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.11.010 |
Characteristics of gaseous and particulate ammonia and their role in the formation of secondary inorganic particulate matter at Delhi, India | |
Saraswati1,2; Sharma, S. K.1,2; Saxena, Mohit3; Mandal, T. K.1,2 | |
2019-04-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 218页码:34-49 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Chemical characteristics of ambient ammonia (NH3), other trace gases (NO, NO2, SO2, and HNO3) and ionic species (NH4 (+), SO42-, NO3- and Cl- etc.,) of PM2.5 were estimated from January 2013 to December 2015 at an urban site of Delhi, India to evaluate the role of ambient NH3 in the formation of secondary inorganic aerosols over Delhi. The average mixing ratios of ambient NH3, NO, NO2, SO2 and HNO3 were recorded as 19.6 +/- 3.5 (ppb), 20.4 +/- 6.2 (ppb), 19.7 +/- 5.3 (ppb), 1.7 +/- 0.5 (ppb) and 1.2 +/- 0.3 (ppb), respectively during the entire study period. The mixing ratios of NH3, other trace gases (SO2, NO and NO2 ) and ionic species of PM2.5 were recorded higher during winter season (except HNO3). The result reveals that the increased relative humidity (RH) during winter season plays a major role in the formation of NH4+ aerosol over the observational site of Delhi. The annual average concentration of total water soluble inorganic ionic components (WSIC) in PM2.5 was 69.1 +/- 38.1 mu g m(-3) accounting for similar to 60% of PM2.5 concentration. The secondary aerosol components i.e. NH4+, SO42-, NO3- and Cl- shared the largest part of the total water soluble ions (61%) and PM2.5 concentration (36%). Among the secondary inorganic aerosol components in PM2.5 , SO42- was the most abundant component followed by NO3- and Cl-. Ion balance and molar equivalent ratios indicated that the sufficient amount of NH4+ was available to neutralize SO42-, NO3- and Cl- in the winter season followed by summer and monsoon seasons. The formation of NH4NO3 was higher in winter due to low temperature and high humid conditions that drives the reaction between NH3 and HNO3 in forward direction. |
英文关键词 | Trace gases Mixing ratio Ion-balance Precursor gases Seasonal variation |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457814600004 |
WOS关键词 | ATMOSPHERIC AMMONIA ; ACID GASES ; CHEMICAL CHARACTERISTICS ; SOURCE APPORTIONMENT ; AMBIENT AMMONIA ; AIR-POLLUTANTS ; PM2.5 ; AEROSOL ; NITRATE ; EMISSIONS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/38233 |
专题 | 地球科学 |
作者单位 | 1.Natl Phys Lab, CSIR, Environm Sci & Biomed Metrol Div, Dr K S Krishnan Rd, New Delhi 110012, India; 2.Acad Sci & Innovat Res AcSIR, CSIR Natl Phys Lab Campus, New Delhi 110012, India; 3.MoEF&CC, New Delhi 110003, India |
推荐引用方式 GB/T 7714 | Saraswati,Sharma, S. K.,Saxena, Mohit,et al. Characteristics of gaseous and particulate ammonia and their role in the formation of secondary inorganic particulate matter at Delhi, India[J]. ATMOSPHERIC RESEARCH,2019,218:34-49. |
APA | Saraswati,Sharma, S. K.,Saxena, Mohit,&Mandal, T. K..(2019).Characteristics of gaseous and particulate ammonia and their role in the formation of secondary inorganic particulate matter at Delhi, India.ATMOSPHERIC RESEARCH,218,34-49. |
MLA | Saraswati,et al."Characteristics of gaseous and particulate ammonia and their role in the formation of secondary inorganic particulate matter at Delhi, India".ATMOSPHERIC RESEARCH 218(2019):34-49. |
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