干旱区生态环境知识资源中心(Arid): Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region

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DOI	10.3390/atmos12091228
	Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region
	Sheoran, Rahul; Dumka, Umesh Chandra; Kaskaoutis, Dimitris G.; Grivas, Georgios; Ram, Kirpa; Prakash, Jai; Hooda, Rakesh K.; Tiwari, Rakesh K.; Mihalopoulos, Nikos
通讯作者	Dumka, UC (corresponding author), Aryabhatta Res Inst Observat Sci, Naini Tal 263001, India.
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2021
卷号	12 期号:9
英文摘要	The present study analyzes data from total suspended particulate (TSP) samples collected during 3 years (2005-2008) at Nainital, central Himalayas, India and analyzed for carbonaceous aerosols (organic carbon (OC) and elemental carbon (EC)) and inorganic species, focusing on the assessment of primary and secondary organic carbon contributions (POC, SOC, respectively) and on source apportionment by positive matrix factorization (PMF). An average TSP concentration of 69.6 +/- 51.8 mu g m(-3) was found, exhibiting a pre-monsoon (March-May) maximum (92.9 +/- 48.5 mu g m(-3)) due to dust transport and forest fires and a monsoon (June-August) minimum due to atmospheric washout, while carbonaceous aerosols and inorganic species expressed a similar seasonality. The mean OC/EC ratio (8.0 +/- 3.3) and the good correlations between OC, EC, and nss-K+ suggested that biomass burning (BB) was one of the major contributing factors to aerosols in Nainital. Using the EC tracer method, along with several approaches for the determination of the (OC/EC)pri ratio, the estimated SOC component accounted for similar to 25% (19.3-29.7%). Furthermore, TSP source apportionment via PMF allowed for a better understanding of the aerosol sources in the Central Himalayan region. The key aerosol sources over Nainital were BB (27%), secondary sulfate (20%), secondary nitrate (9%), mineral dust (34%), and long-range transported mixed marine aerosol (10%). The potential source contribution function (PSCF) and concentration weighted trajectory (CWT) analyses were also used to identify the probable regional source areas of resolved aerosol sources. The main source regions for aerosols in Nainital were the plains in northwest India and Pakistan, polluted cities like Delhi, the Thar Desert, and the Arabian Sea area. The outcomes of the present study are expected to elucidate the atmospheric chemistry, emission source origins, and transport pathways of aerosols over the central Himalayan region.
英文关键词	chemical composition TSP secondary organic carbon PMF source apportionment central Himalayas
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000699053900001
WOS关键词	POSITIVE MATRIX FACTORIZATION ; BIOMASS BURNING EMISSIONS ; BOUNDARY-LAYER DYNAMICS ; LONG-RANGE TRANSPORT ; INDO-GANGETIC PLAIN ; CARBONACEOUS AEROSOLS ; BLACK CARBON ; ABSORPTION PROPERTIES ; SUBMICRON AEROSOL ; URBAN-ENVIRONMENT
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362641
作者单位	[Sheoran, Rahul; Dumka, Umesh Chandra] Aryabhatta Res Inst Observat Sci, Naini Tal 263001, India; [Kaskaoutis, Dimitris G.; Grivas, Georgios; Mihalopoulos, Nikos] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece; [Kaskaoutis, Dimitris G.; Mihalopoulos, Nikos] Univ Crete, Dept Chem, Environm Chem Proc Lab, Iraklion 71003, Greece; [Ram, Kirpa] Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi 221005, Uttar Pradesh, India; [Prakash, Jai] Washington Univ, Aerosol & Air Qual Res Lab, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA; [Hooda, Rakesh K.] Finnish Meteorol Inst, Erik Palmenin Aukio 1, FI-00560 Helsinki, Finland; [Tiwari, Rakesh K.] DDU Gorakhpur Univ, Dept Phys, Gorakhpur 273009, Uttar Pradesh, India; [Mihalopoulos, Nikos] Cyprus Inst, Climate & Atmosphere Res Ctr, CY-2121 Nicosia, Cyprus
推荐引用方式 GB/T 7714	Sheoran, Rahul,Dumka, Umesh Chandra,Kaskaoutis, Dimitris G.,et al. Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region[J],2021,12(9).
APA	Sheoran, Rahul.,Dumka, Umesh Chandra.,Kaskaoutis, Dimitris G..,Grivas, Georgios.,Ram, Kirpa.,...&Mihalopoulos, Nikos.(2021).Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region.ATMOSPHERE,12(9).
MLA	Sheoran, Rahul,et al."Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region".ATMOSPHERE 12.9(2021).