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Articles by Naseem Rauf
Total Records ( 2 ) for Naseem Rauf
  Rashida Kanwal , Toqeer Ahmed , S.S. Tahir and Naseem Rauf
  In present study, drinking ground water of different sectors of Islamabad was analyzed. Twenty-three water samples were collected in sterile bottles from different tube wells located in various sectors of Islamabad. These water samples were observed microbiologically for total viable count (TVC) and coliform count by heterotrophicplate count and MPN method, respectively. Different pathogenic bacteria were isolated and identified. Water samples of tube well number 101 and 138 were found to be contaminated and showed the presence of E.coli while the all other tube wells were contaminated with B. cereus. These bacterial species were isolated and then the tolerance of these isolated strains were checked in the presence of metals like Pb, Cu, Fe, Mn and As at different concentration (from 0.5 to 10 ppm). Results revealed that these bacteria successfully survive in these toxic conditions. As shown in results that E.coli has the ability to survive at 10 ppm of As but B. cereus can survive at 10 ppm of Mn and As. While no growth of E.coli and B. cereus was observed at 10 ppm of other metals like Pb, Cu and Fe.
  Toqeer Ahmed , Rashida Kanwal , S.S. Tahir and Naseem Rauf
  In present study, drinking surface water of different dams, located in Rawalpindi / Islamabad region, was analyzed. Water samples were observed bacteriologically for total viable count and total coliform count by heterotrophic plate count and MPN method. Pathogenic bacteria were isolated from water samples collected from different dams and related filtration plants and identified by different bio-chemical tests. Water samples contain different pathogenic bacteria like Bacillus cereus, E. aerogens, S. aureus, E. coli, Salmonella spp., Shigella spp. and Streptobacillus spp. In all filtration plants, chlorine, a sterilizing agent and the main co-agulant, Alum sulphate, was used. Growth of Coliforms was observed after chlorination in water samples, collected from Rawal dam filtration plant. While no growth of any microorganisms was observed after chlorination in case of Simly dam and Khanpur dam filtration plants but water sample taken from storage of Khanpur filtration plant after filtration and chlorination, was also contaminated. The objective of this study was to check the quality of drinking water and comparative analysis of different dams (Rawal, Simly and Khanpur) and related filtration plants which supplying water for drinking and other purposes to different inhabitants of Rawalpindi and Islamabad after filtration and chlorination.
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