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ASSESSMENT OF SPATIO-TEMPORAL VARIATION ANDPOTENTIAL HUMAN HEALTH RISK OF AMBIENT NITROGENDIOXIDE AND SULFUR DIOXIDE AROUND INDUSTRIAL AREA OFMUNDRA, GUJARAT USING GIS AND AERMOD MODEL

Coastal area of Mundra in Gujarat is the crucial power generating area in India, which contains coal based mega thermal power plants. In order to assess the pollutant levels the continuous monitoring of the gaseous and particulate pollutants was observed from 2008 to 2015. The trend was initially increasing when the plant construction started due to construction related activities and then decreasing as can be seen from the regression analysis for various parameters. For briefness, the trend has been shown here for SO2 and NO2 at stations for 5 locations within the 3kmradius of plant area in upwind and downwind direction of the power plants. The study has been conducted for the seasonal and temporal alteration in the ambient SO2 and NO2 concentration of in for a period of eight years in the industrial area of coastal Gujrat in India. Geographical information system (GIS) tool has been used to identify the study area land-use pattern of the coastal Mundra region. Pollution dispersion and trend has been observed with AERMOD Model and statistically. Multiple regression model and regression line analysis has been analyzed in this study for metrological parameters and dispersion of SO2 and NO2 concentration in this industrial area. Health risk assessment has been performed association Indian National Ambient Air Quality standard. Gaseous pollutant emission and dispersion can be influenced by meteorological variables such as temperature, humidity, wind characteristics and the children are also sensitive receptors for air pollution.