GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2017.09.005
Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics
Aswini, A. R.; Hegde, Prashant; Nair, Prabha R.
2018
发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2018
卷号199页码:40-53
文章类型Article
语种英语
国家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 mu g m(-3) with an annual average of 41 +/- 21 mu g 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. SO(4)(2-)was the most abundant species (average similar to 9.8 +/- 4.8 mu g m(-3)) and constituted for 24% of total mass. Organic Carbon (OC) was the next most abundant species ranging from 1 to 16 mu g m(-3) with an average of 7 +/- 3.6 mu g 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 (similar to 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 nighttime. 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.


英文关键词Peninsular India Carbonaceous aerosols Seasonal variation Source characteristics Biomass burning
领域地球科学
收录类别SCI-E
WOS记录号WOS:000415908300004
WOS关键词SOLUBLE ORGANIC NITROGEN ; BIOMASS BURNING AEROSOLS ; LONG-RANGE TRANSPORT ; HIGH-ALTITUDE SITES ; CHEMICAL-COMPOSITION ; ELEMENTAL CARBON ; BLACK-CARBON ; SECONDARY FORMATION ; URBAN-ENVIRONMENT ; GANGETIC PLAIN
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/38631
专题地球科学
作者单位Vikram Sarabhai Space Ctr, Space Phys Lab, Trivandrum, Kerala, India
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Aswini, A. R.,Hegde, Prashant,Nair, Prabha R.. Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics[J]. ATMOSPHERIC RESEARCH,2018,199:40-53.
APA Aswini, A. R.,Hegde, Prashant,&Nair, Prabha R..(2018).Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics.ATMOSPHERIC RESEARCH,199,40-53.
MLA Aswini, A. R.,et al."Carbonaceous and inorganic aerosols over a sub-urban site in peninsular India: Temporal variability and source characteristics".ATMOSPHERIC RESEARCH 199(2018):40-53.
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