Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/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 |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
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 |
推荐引用方式 GB/T 7714 | 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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