DOI: 10.1016/j.atmosres.2017.09.005
Scopus记录号: 2-s2.0-85033698386
论文题名: Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics
作者: Aswini A.R. ; Hegde P. ; Nair P.R.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 199 起始页码: 40
结束页码: 53
语种: 英语
英文关键词: Biomass burning
; Carbonaceous aerosols
; Peninsular India
; Seasonal variation
; Source characteristics
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric thermodynamics
; Nitrogen
; Organic carbon
; Particles (particulate matter)
; Biomass-burning
; Carbonaceous aerosol
; Peninsular india
; Seasonal variation
; Source characteristics
; Urban growth
; aerosol
; biomass burning
; concentration (composition)
; monsoon
; particulate matter
; seasonal variation
; temporal variation
; urban area
; India
英文摘要: PM10 aerosol samples collected from a sub-urban site in Coimbatore during pre-monsoon, monsoon, post-monsoon and winter from 2014 to 2016 showed a large variability from 7.6 to 89 μg m− 3 with an annual average of 41 ± 21 μg m− 3 (N = 69). High abundance of PM10 and other components were recorded during winter and lowest during monsoon period. Total carbonaceous aerosols and water soluble ionic species contributed to 31% and 45% of PM10 mass respectively. SO4 2 − was the most abundant species (average ~ 9.8 ± 4.8 μg m− 3) and constituted for 24% of total mass. Organic Carbon (OC) was the next most abundant species ranging from 1 to 16 μg m− 3 with an average of 7 ± 3.6 μg m− 3 accounting for 17% of PM10 mass concentration. POC (primary organic carbon) and SOC (secondary organic carbon) accounted for 56% and 44% of OC respectively. A major portion of OC (~ 60%) was found to be water soluble. The correlation between OC and EC (elemental carbon) was found to be higher for night-time compared to daytime suggesting their origin from common sources during night-time. K+ was found to be strongly correlated with OC during night-time. WSOC showed good correlation with POC and K+ which was high especially during night-time. WSON (water soluble organic nitrogen) accounted for 34% of water soluble total nitrogen (WSTN). HCO3 − exhibited significant positive correlation with Ca2 + during daytime indicating their crustal origin. The observations suggest that the region is influenced by biomass burning sources, however during day-time, secondary production and terrestrial sources (due to high temperature and wind) significantly influence the atmospheric aerosols over this region. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109028
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum, India
Recommended Citation:
Aswini A.R.,Hegde P.,Nair P.R.. Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics[J]. Atmospheric Research,2018-01-01,199