Browsing by Author "Noor, N."

Now showing 1 - 2 of 2
  • Thumbnail Image
    ItemOpen Access
    Exposure to NO2 in occupational built environments in urban centre in Lahore
    (Pakistan Agricultural Scientists Forum, 2015-06-30) Andleeb, S.; Ali, Z.; Afzal, F.; Razzaq, A. A.; Mehmood, T.; Noor, N.; Rasheed, F.; Nasir, Zaheer A.; Colbeck, Ian
    Increased economic growth, urbanisation and substantial rise in automobile vehicles has contributed towards the elevated levels of air pollution in major cities in Pakistan. Aone week study was conducted by using passive samplers to assess NO2 concentration in occupational built environments at two most congested and populated sites of Lahore. Both sites were locatedon the busy roads of Lahore. At Site-I the highest concentration was in outdoors followed by corridor and indoor. While at Site II all the sampling location wereindoors and level were comparable to that of outdoor levelsat Site I. The results suggest the likely contribution of ambient sources in exposure to indoor NO2 in educational and other occupational built environments in urban centres.
  • Thumbnail Image
    ItemOpen Access
    Measurement of NO2 indoor and outdoor concentrations in selected public schools of Lahore using passive sampler
    (Pakistan Agricultural Scientists Forum, 2016-06-30) Mehmood, T.; Ali, Z.; Noor, N.; Sidra, S.; Nasir, Zaheer A.; Colbeck, Ian
    Higher levels of NO2 are a danger to human health especially for children. A seven day study was carried to find out the ambient concentrations of NO2in 27 schools of Lahore with the help of passive samplers. In each school three sites were selected, viz: laboratory, corridor and outdoors. After 7 days exposure the tubes were subjected to spectrophotometric analysis. Results showed that the maximum values measured in laboratory, outdoor and corridors were 376µg/m3 , 222µg/m3 and 77µg/m3 . Minimum values for laboratory, outdoor and corridors were 10µg/m3 , 20µg/m3 and 8µg/m3 . Factors affecting these values were laboratory activities and proximity to main roads. These values were significantly higher than the standard values defined by EPA. Therefore children in schools were at risk of developing health complications.