Ambient Air Quality Monitoring in Nashik City-1 (Maharashtra, India)

摘要

Ambient air quality was monitored during the year 2011 (January 2011 to December 2011), concentrations of oxides of nitrogen (NOx), oxides of sulphure (SOx) and PM10 (Particularte Matter having an aerodynamic diameter less than or equal to 10 mu m) were collected :over : successive periods of about 8 hour a day. Three representative sites Were Selected for the study, Industrial (I), Commercial (C) and Residential (R). High volume air sampler was,used to Measure the concentration of oxides of nitrogen (NOx), oxides of sulphur (SOx) and Respirable suspended particulate matter (RSPM). The results repotted pertain to an eight hour successive continuous air sampling exercies carried out at each of the three selected locations in Nashik city, a 4th fastest growing city in Maharashtra (India). Criteria pollutants PM10, SO2 and NO2 measured are found to have either crossed or on the average of crossing the limits Or in the permissible Inuits of NAAQS (National Ambient Air Quality Standard, November 18, 2009). While transport related emissions are the major sources of air contamination, increasing civil construction activities also contribute to particulars. The exponential rise in volume of vehicles, disadvantageous traffic flow pattern, differing driving cycle pattern and human interceptions deserve due attention. The values of PM10 (Particles>10 mu, PM 10 mu g/m(3)) was crossing the permissible limit and was exceed the National Ambient Air Quality Standard (NAAQS) at all locations. Maximum PM10 values noted is 260 (mu g/m(3)) which is two timed more than the permissible limit of 24 hour standard (NAAQS). The concentration of SO2 and NO2 was within of National Ambient Air Quality Standard (NAAQS) at all the location. Present research necessitating the immediate installation of a continuous air monitoring at different location in the city and control mechanism.