Arid
DOI10.1007/s11356-015-4272-6
Study of the carbonaceous aerosol and morphological analysis of fine particles along with their mixing state in Delhi, India: a case study
Tiwari, S.1; Pipal, A. S.2; Hopke, Philip K.3; Bisht, D. S.1; Srivastava, A. K.1; Tiwari, Shani4; Saxena, P. N.5; Khan, A. H.5; Pervez, S.6
通讯作者Pipal, A. S.
来源期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
EISSN1614-7499
出版年2015
卷号22期号:14页码:10744-10757
英文摘要

Because of high emissions of anthropogenic as well as natural particles over the Indo-Gangetic Plains (IGP), it is important to study the characteristics of fine (PM2.5) and inhalable particles (PM10), including their morphology, physical and chemical characteristics, etc., in Delhi during winter 2013. The mean mass concentrations of fine (PM2.5) and inhalable (PM10) (continuous) was 117.6 +/- 79.1 and 191.0 +/- 127.6 mu g m(-3), respectively, whereas the coarse mode (PM10-2.5) particle PM mass was 73.38 +/- 28.5 mu g m(-3). During the same period, offline gravimetric monitoring of PM2.5 was conducted for morphological analysis, and its concentration was similar to 37 % higher compared to the continuous measurement. Carbonaceous PM such as organic carbon (OC) and elemental carbon (EC) were analyzed on the collected filters, and their mean concentration was respectively 33.8 and 4.0 mu g m(-3) during the daytime, while at night it was 41.2 and 10.1 mu g m(-3), respectively. The average OC/EC ratio was 8.97 and 3.96 during the day and night, respectively, indicating the formation of secondary organic aerosols during daytime. Effective carbon ratio was studied to see the effect of aerosols on climate, and its mean value was 0.52 and 1.79 during night and day, indicating the dominance of absorbing and scattering types of aerosols respectively into the atmosphere over the study region. Elemental analysis of individual particles indicates that Si is the most abundant element (similar to 37-90 %), followed by O (oxide) and Al. Circularity and aspect ratio was studied, which indicates that particles are not perfectly spherical and not elongated in any direction. Trajectory analysis indicated that in the months of February and March, air masses appear to be transported from the Middle Eastern part along with neighboring countries and over Thar Desert region, while in January it was from the northeast direction which resulted in high concentrations of fine particles.


英文关键词Morphology Mixing state Carbonaceous particles ECR Al silicates
类型Article
语种英语
国家India ; USA
收录类别SCI-E
WOS记录号WOS:000357344300036
WOS关键词SEM-EDX ANALYSIS ; BLACK CARBON ; PARTICULATE MATTER ; OPTICAL-PROPERTIES ; ELEMENTAL CARBON ; AMBIENT AIR ; PM2.5 ; LIGHT ; URBAN ; PM10
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187160
作者单位1.Indian Inst Trop Meteorol, New Delhi 110060, India;
2.Savitribai Phule Pune Univ, Dept Chem, Pune 411007, Maharashtra, India;
3.Clarkson Univ, Potsdam, NY 13699 USA;
4.Banaras Hindu Univ, Dept Phys, Varanasi 221005, UP, India;
5.Indian Inst Toxicol Res, Lucknow 226001, Uttar Pradesh, India;
6.Pt Ravishankar Shukla Univ, Raipur 492010, Madhya Pradesh, India
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Tiwari, S.,Pipal, A. S.,Hopke, Philip K.,et al. Study of the carbonaceous aerosol and morphological analysis of fine particles along with their mixing state in Delhi, India: a case study[J],2015,22(14):10744-10757.
APA Tiwari, S..,Pipal, A. S..,Hopke, Philip K..,Bisht, D. S..,Srivastava, A. K..,...&Pervez, S..(2015).Study of the carbonaceous aerosol and morphological analysis of fine particles along with their mixing state in Delhi, India: a case study.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(14),10744-10757.
MLA Tiwari, S.,et al."Study of the carbonaceous aerosol and morphological analysis of fine particles along with their mixing state in Delhi, India: a case study".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.14(2015):10744-10757.
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