干旱区生态环境知识资源中心(Arid): Carbonaceous and water-soluble inorganic aerosols over a semi-arid location in north west India: Seasonal variations and source characteristics

Arid

DOI	10.1016/j.jaridenv.2019.104018
	Carbonaceous and water-soluble inorganic aerosols over a semi-arid location in north west India: Seasonal variations and source characteristics
	Hegde, Prashant 1; Vyas, B. M.2; Aswini, A. R.1; Aryasree, S.1; Nair, Prabha R.1
通讯作者	Hegde, Prashant
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	172
英文摘要	This paper presents the seasonal features of major carbonaceous components in aerosols, their source characteristics and the role of meteorology in influencing the chemical characteristics of aerosols at a semi-arid location Udaipur (24.5 degrees N; 73.6 degrees E), India, based on the analysis of PM10 samples (N = 128) collected during 2010-14. The samples were analysed for OC (organic carbon), EC (elemental carbon), CC (carbonate carbon), WSOC (water-soluble OC), WSTN (water-soluble total nitrogen) and water-soluble inorganic ions. Primary and secondary OC (POC and SOC), water-insoluble OC (WIOC) and water-soluble organic nitrogen (WSON) were also estimated. The carbonaceous aerosols (TC) contributed to similar to 23% of PM10 loading. Both EC and OC mass loading showed high values during dry period (October to May) (OC = 26 +/- 14 mu g m(-3), EC = 3.2 +/- 2.2 mu g m(-3) with the PM10 mass loading of 140 +/- 52 mu g m(-3)) compared to wet period (June to September) (OC = 16 +/- 10 mu g m(-3), EC = 1.4 +/- 0.8 mu g m(-3) with the PM10 mass loading of 84 +/- 43 mu g m(-3)). While the crustal species, biomass tracers and anthropogenic species dominated during dry period, the sea salt species (Na+, Cl- , ss-SO4, ss-Mg, ss-Ca, ss-K) were comparatively higher in wet period. OC was found to be predominantly water-insoluble and secondary in nature. Local anthropogenic/natural emissions and marine transported aerosols (by south-westerlies) contributed during wet period, while dry period is influenced by transported anthropogenic aerosols from IGP and northern India (by north/north-easterlies) along with mineral aerosols from desert regions (by westerlies). Monthly average contribution of total carbonaceous aerosols (TCA = OM (organic matter) + EC + CC) varied from 20 to 42%, over a year while the water-soluble ionic fraction varied from 16 to 36% of the PM10 mass. The un-analysed part which is mostly mineral dust contributed 39-55%.
英文关键词	Arid region Particulate matter Carbonaceous aerosol Chemical composition
类型	Article
语种	英语
国家	India
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000498321500009
WOS关键词	SECONDARY ORGANIC AEROSOL ; NITROGEN DEPOSITION ; PARTICULATE MATTER ; ELEMENTAL CARBON ; AMAZON BASIN ; URBAN ; CLIMATE ; RANGE ; SITE ; CONSTITUENTS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312308
作者单位	1.Vikram Sarabhai Space Ctr, Space Phys Lab, Trivandrum, Kerala, India; 2.ML Sukhadia Univ, Dept Phys, Udaipur, Rajasthan, India
推荐引用方式 GB/T 7714	Hegde, Prashant,Vyas, B. M.,Aswini, A. R.,et al. Carbonaceous and water-soluble inorganic aerosols over a semi-arid location in north west India: Seasonal variations and source characteristics[J],2020,172.
APA	Hegde, Prashant,Vyas, B. M.,Aswini, A. R.,Aryasree, S.,&Nair, Prabha R..(2020).Carbonaceous and water-soluble inorganic aerosols over a semi-arid location in north west India: Seasonal variations and source characteristics.JOURNAL OF ARID ENVIRONMENTS,172.
MLA	Hegde, Prashant,et al."Carbonaceous and water-soluble inorganic aerosols over a semi-arid location in north west India: Seasonal variations and source characteristics".JOURNAL OF ARID ENVIRONMENTS 172(2020).