Estimation of long term concentrations of SO2 from Mathura refinery with Gaussian diffusion model

Abstract

The ground level long term concentrations (ug/m³) to obtain spatial distribution of sulphur dioxide around the Mathura refinery have been computed for all four seasons using steady state Gaussian diffusion model valid for point sources. The monitored data of sulphur dioxide at four points in different sectors at different distances collected prior to and after the commissioning of the refinery have also been utilised. It is seen that there is no significant increase in sulphur dioxide concentration after commissioning of the refinery and the model also confirms that the long term concentrations due to refinery are insignificant at the monitoring stations.