Indian Journal of Science and Technology
Year: 2010, Volume: 3, Issue: 8, Pages: 900-904
K. Elampari, T. Chithambarathanu and R. Krishna Sharma*
Research Department of Physics, S.T. Hindu College, Nagercoil, India- 629002
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 ozone
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