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Air Quality Monitoring of some Gaseous Pollutants at selected points in Gullberg II, Lahore, Pakistan

Author Affiliations

  • 1 Lahore College for Women University, Department of Environmental Science, Lahore, PAKISTAN

Int. Res. J. Environment Sci., Volume 3, Issue (6), Pages 38-47, June,22 (2014)


The research study was based on air quality monitoring at selected point in Gullberg II, Lahore, Pakistan. Gaseous pollutants selected for Air quality assessment were Sulfur Dioxide, Nitrogen Dioxide, Carbon Monoxide and Ozone. Ambient HC Analyzer was used for monitoring of air quality and the data on the daily basis (24 Hours) for the period of four months (January April, 2011) was collected. Results revealed that Nitrogen dioxide (NO) and Ozone (O) were found to be in concentrations higher than the NAAQS (National Ambient Air Quality Standards, Pakistan) at most of the selected points while Carbon Monoxide (CO) and sulfur dioxide (SO) were found to be within the permissible limits according to the standards. Highest Concentrations of NO, SO, CO, O during four months of monitoring was 220g/m, 118g/m, 7.74 g/m, 212 g/m3 respectively. These values were higher than NAAQS permissible limit which are 80g/m, 120g/m, 5 g/m, 180g/m3 for 24 hours for NO, SO, CO, O3 respectively. Concentration of different pollutants has fluctuation while the Nitrogen dioxide (NO) and Ozone (O) concentrations were found to be high throughout the monitoring period. The results of Air Quality Index about the air quality of Gullberg II shows that two months (March & April) showed unhealthy and Hazardous condition due to weather conditions enhancing (sunlight, high temperature, humidity etc.) the effects of gaseous pollutants.


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