Pollution Research Paper

Vol.29, Issue 1, 2010; Page No.(123-125)

ON FREQUENCY DISTRIBUTION OF SOME AIR POLLUTANT CONCENTRATIONS AT THOOTHUKUDI, INDIA

K. SIVARAMASUNDARAM, P. MUTHUSUBRAMANIAN AND R.V. JEBA RAJASEKHAR

Abstract

Probability density functions were utilized to the 24hour average concentrations of the pollutants like oxides of nitrogen (NOx), sulphur dioxide (SO2), respirable particulate matter (RPM) and suspended particulate matter (SPM) recorded from April to August 2006 in Thoothukudi, India and the distribution of levels of pollutants was performed. A non parametric goodness of fit test namely c2 test was also performed for the same datasets of the pollutant concentrations in the present investigation. It was observed that lognormal distribution was appropriate for the dataset pertaining to NOx, SO2 and RPM concentrations, whereas the normal distribution was appropriate for the dataset related to SPM concentrations. The distribution fitting so obtained for the dataset would be used not only for obtaining the percentage of concentrations falling in specific ranges but also for framing suitable regulation measure and its subsequent implementation.

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