当前世界环境

The present study was aimed to assess the water quality of Birsinghpur town and its surrounding rural area. A total number of 25 water samples (5 surface and 20 ground water samples) were collected from different locations of study area at a particular distance during the year of 2008-2009 and analyzed for various heavy metals such as Pb, Fe, Mn, Cu, Ni and Cd. The results showed that in surface water Pb, Fe, Mn, Cu, Ni and Cd varied from the ranges of 0.006 to 0.110, 0.55 to 2.76, 0.125 to 0.292, 0.025 to 0.046, 0.014 to 0.019 and 0.003 to 0.016 mg/l, respectively. In ground water the concentration of these metals were found in the ranges of Pb (0.003 to 0.060 mg/l), Fe (0.024 to 2.38 mg/l), Mn (0.012 to 0.248 mg/l), Cu (nil to 0.058 mg/l), Ni (nil to 0.019 mg/l) and Cd (nil to 0.0083 mg/l). The above results indicate that some water samples contained Pb, Fe, Mn and Cd above is permissible limits recommended by various national agencies.