Abstract
Dust samples were collected through the filters of air conditioners from the selected sites. The samples were analyzed using x-ray diffraction technique to find out the actual compounds present in the dust samples. The sites were either commercial or residential. The contributory sources of different pollutants as detected from this study have been discussed. It was found that in the dust samples Albite, Clinochlore, Dolomite, Gypsum, Halite, Kaolinite, Quartz and Talc were identified as the major components in the atmosphere of Lahore. Key words: airborne particulate matter, x-ray diffraction technique
