Pollution Research Paper

Vol 34, Issue 4, 2015; Page No.(827-834)

ASSESSMENT OF AMBIENT AIR QUALITY WITH REFERENCE TO PARTICULATE MATTER (PM10 AND PM2.5) AND GASEOUS POLLUTANTS (SO2 AND NO2) NEAR BILEIPADA, JODA AREA OF KEONJHAR, ODISHA, INDIA

SUVENDU KUMAR DASH AND ADITYA KISHORE DASH

Abstract

Ambient air quality parameters like PM10, PM2.5, SO2 and NO2 were studied for a period of one year covering all the three seasons i.e. summer, monsoon and winter starting from March, 2014 – February, 2015 at eight different locations near Bileipada, Joda areaof Keonjhar, Odisha, India. Standard methods as per CPCB were followed for both collection and analysis of different parameters. The results reported pertain to 24 hour successive continuous air sampling exercise carried out at each eight selected monitoring stations. A two-way Analysis of Variance (ANOVA) test for different parameters based on different monitoring stations and seasons were made. The F values computed as 30.493, 21.875, 13.986 and 11.533 for PM10, PM2.5, SO2 and NO2 respectively due to stations are found to be highly significant (at P<0.01). This indicates that, there exists a significant variation among the different parameters due to variation in stations. The F values computed as 341.817, 280.723, 210.928 and 66.569 for PM10, PM2.5, SO2, and NO2 respectively due to variation in seasons are also found to be highly significant (at P<0.01). This also shows a significant variation in different parameters due to variation in seasons. Further in one-way ANOVA test, the F values were calculated to be 184.347, 178.199, 147.265 and 50.653 for PM10, PM2.5, SO2 and NO2 respectively which is found to be significant (at P<0.01). One-way ANOVA on PM10, PM2.5, SO2 and NO2 due to variation in stations, the F value was found to be 8.550, 7.145, 5.349 and 7.563 for PM10, PM2.5, SO2 and NO2 respectively are significant (at P<0.01). Further, in order to find out the pin-point results with respect to similarities or difference in mean values for various parameters between one or more stations, the one-way ANOVA with Duncan’s Multiple Range Test (DMRT) for homogenous means was applied. The causes of variation of different parameters in the study are multi-faced. They are related to both emission variability from both point and non-point sources and to possible variations in geographical variables such as mixed layer depth, wind speed and humidity levels in the study area with respect to the position of the study area and variations in seasons.

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