Air Quality Index of Bhopal City, Madhya Pradesh, India
Air pollution is now one of the most pressing environmental concerns. Air Quality Index is a tool for effective communication of air quality status to people in terms, which are easy to understand. To assess the Air Quality Index of Bhopal city of Madhya Pradesh, India, a study has been conducted during year 2016-17. Total eighteen locations were selected in Bhopal city for ambient air quality monitoring of seven pollutants mainly Particulate Matter less than 10 µ size (PM10), Particulate Matter less than 2.5 µ size (PM2.5), Oxides of nitrogen (NOx), Sulphur dioxide (SO2), Ozone (O3), Ammonia (NH3) and Lead (Pb). These all pollutants may pose harmful effect on human health, as exposure of these are associated with cardiovascular, respiratory disease, neurological impairments, increased risk of preterm birth, mortality and morbidity. Therefore Air Quality Index of developing city such as Bhopal is important for health concern in India. The study revealed that average concentration of gaseous pollutants i.e. NOx, SO2, O3, NH3 in ambient air are well within standard limits at all selected locations however Particulate Matter (PM10, PM2.5) levels were found exceeding the National Ambient Air Quality Standards 2009 at all monitoring locations. Air Quality Index was poor (207.82-241.92) at three locations, Moderate (105.62-193.07) at twelve locations and satisfactory (78-97) at three locations around the city. Overall ambient Air Quality Index of Bhopal city was observed to be moderate during this study span.
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