Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11869-015-0347-2 |
Significance of volatile organic compounds and oxides of nitrogen on surface ozone formation at semi-arid tropical urban site, Hyderabad, India | |
Venkanna, R.1; Nikhil, G. N.1; Sinha, P. R.2; Rao, T. Siva3; Swamy, Y. V.1 | |
通讯作者 | Swamy, Y. V. |
来源期刊 | AIR QUALITY ATMOSPHERE AND HEALTH
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ISSN | 1873-9318 |
EISSN | 1873-9326 |
出版年 | 2016 |
卷号 | 9期号:4页码:379-390 |
英文摘要 | The chemistry and variation in light molecular weight (C-2-C-5) volatile organic compounds (VOCs) and nitrogen oxides (NOx = NO + NO2) over the formation of tropospheric ozone (O-3) was studied for a time period of 1 year (2013) at a tropical urban site located in Deccan plateau region of Hyderabad, India, with semi-arid climate. Diel pattern of hydrocarbons showed maxima in the morning and night and minima in the afternoon. Ethylene and propylene showed relatively larger diurnal amplitude than other hydrocarbons. Among the analyzed hydrocarbons, acetylene was the most abundant with an annual mean of 5.5 +/- 1.3 ppbv. All the VOCs exhibited a seasonal variation with monsoon and summer minimum and winter maximum. Ozone formation potentials (OFP) and propylene-equivalents (propy-equiv.) were calculated to account the contribution of individual hydrocarbons towards formation of O-3. Propylene had the highest contribution of propy-equiv. (34 %) and OFP (28.4 %) among the VOCs observed. The concentrations of VOCs and their reactivity with hydroxyl radicals played a significant role on the levels of propy-equiv. and OFP. Strong correlations 0.65 and 0.77 were observed between O-3 vs. propy-equiv. and O-3 vs. OFP, respectively. The crossover point relationship between NOx , VOCs, and O-3 showed enhancement of O-3 at lower levels and decreased at higher levels of NOx in the range of VOCs concentrations studied. Among hydrocarbons, propylene (10) and ethane (6.5) showed the highest and lowest crossover points, respectively. |
英文关键词 | Correlation analysis Hydrocarbons Nitrogen oxides Peroxy radicals Surface ozone |
类型 | Article |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E |
WOS记录号 | WOS:000376046500005 |
WOS关键词 | LIQUEFIED PETROLEUM GAS ; PEARL RIVER-DELTA ; NONMETHANE HYDROCARBONS ; TROPOSPHERIC CHEMISTRY ; AIR-POLLUTION ; EMISSIONS ; IMPACT ; LEAKAGE ; NOX ; LPG |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/191188 |
作者单位 | 1.Indian Inst Chem Technol, Bioengn & Environm Sci, Hyderabad 500007, Andhra Pradesh, India; 2.Tata Inst Fundamental Res, Natl Balloon Facil, Hyderabad 500062, Andhra Pradesh, India; 3.Andhra Univ, Coll Sci & Technol, Dept Inorgan & Analyt Chem, Visakhapatnam, Andhra Pradesh, India |
推荐引用方式 GB/T 7714 | Venkanna, R.,Nikhil, G. N.,Sinha, P. R.,et al. Significance of volatile organic compounds and oxides of nitrogen on surface ozone formation at semi-arid tropical urban site, Hyderabad, India[J],2016,9(4):379-390. |
APA | Venkanna, R.,Nikhil, G. N.,Sinha, P. R.,Rao, T. Siva,&Swamy, Y. V..(2016).Significance of volatile organic compounds and oxides of nitrogen on surface ozone formation at semi-arid tropical urban site, Hyderabad, India.AIR QUALITY ATMOSPHERE AND HEALTH,9(4),379-390. |
MLA | Venkanna, R.,et al."Significance of volatile organic compounds and oxides of nitrogen on surface ozone formation at semi-arid tropical urban site, Hyderabad, India".AIR QUALITY ATMOSPHERE AND HEALTH 9.4(2016):379-390. |
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