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Chithambarathanu, T.
- Examining the Variations of Ground Level Ozone and Nitrogen Dioxide in a Rural Area Influenced by Brick Kiln Industries
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PDF Views:133
Authors
Affiliations
1 Research Department of Physics, S.T. Hindu College, Nagercoil, India- 629002, IN
1 Research Department of Physics, S.T. Hindu College, Nagercoil, India- 629002, IN
Source
Indian Journal of Science and Technology, Vol 3, No 8 (2010), Pagination: 900-903Abstract
Burning of biomass fuels is responsible for the emission of both trace and non-trace greenhouse gases such as CO2, CH4, CO, N2O, NOX and NO. The photolysis of nitrogen dioxide (NO2) directly leads to the formation of ozone (O3) in the lower atmosphere. This work is an attempt to estimate the level of ground level ozone (GLO) and NO2 concentrations in the atmospheric surface layer of a rural area dominated by traditional brick kiln industries. A portable monitor with O3 and NO2 sensor heads was employed for the measurement of the trace gases from May 2009 to July 2009. The GLO concentration showed a clear diurnal cycle with higher values in the daytime and notably lower values at night time. The concentration of GLO during the period of study varied from a minimum value of 7 ppb around 0530 h to a value of 48 ppb around 1430 h. The lowest mean day time value of NO2 was 2.52 ppb and the highest mean night time value was 5.83 ppb.Keywords
Brick Kilns, Biomass, Diurnal Variation, Ozone Precursor, Photochemical Reaction, Ground Level OzoneFull Text
References
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- Surface Ozone Air Pollution in Nagercoil, India
Abstract Views :502 |
PDF Views:117
Authors
Affiliations
1 Res. Dept. of Physics, S. T. Hindu College, Nagercoil-629002, TN, IN
2 Dept. of Physics, CAPE Engineering College, Nagercoil–629002, TN, IN
3 Dept. of Physics, T.B.M.L College, Porayar, 609307, TN, IN
1 Res. Dept. of Physics, S. T. Hindu College, Nagercoil-629002, TN, IN
2 Dept. of Physics, CAPE Engineering College, Nagercoil–629002, TN, IN
3 Dept. of Physics, T.B.M.L College, Porayar, 609307, TN, IN
Source
Indian Journal of Science and Technology, Vol 4, No 3 (2011), Pagination: 181-184Abstract
Ozone (O3), one of the most powerful oxidants known, is a naturally occurring allotrope of oxygen. At high levels in the troposphere it is phytotoxic as well as cytotoxic. It is a secondary air pollutant formed by complex photochemical oxidation reactions. In this study, the measured surface ozone with one of its precursor nitrogen dioxide (NO2) and important meteorological parameters at a semi-urban area during 2009-2010 has been analyzed. The maximum concentration of surface ozone was obtained during summer season (May 2009, 42.24 ppb) and the minimum was obtained during north east monsoon season (October 2009, 7.54 ppb). The results of this study show that the surface ozone concentration noticeably correlates with temperature (r=0.73) and NO2 (r=0.93). It was found that not a single ozone exceedance day occurs during the period of study and the level of O3 concentration is within the limit of WHO recommendation (50 ppb).Keywords
Photochemical, Pollutant, Precursor, Surface Ozone, TroposphereFull Text
References
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