Arid
DOI10.1007/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
ISSN1873-9318
EISSN1873-9326
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
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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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