Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 197

Full Length Research Paper

Assessment of the contamination of trace metal in Balu River water, Bangladesh

  Mohammad Zakarul Islam1*, Ansara Noori1, Rafiqul Islam2, Mohammad Alaul Azim2 and Shamshed B. Quraishi3
  1Department of Applied Chemistry and Chemical Technology, Noakhali Science and Technology University, Sonapur- 3802, Noakhali, Bangladesh. 2Department of Applied Chemistry and chemical Technology, University of Dhaka, Dhaka-1000, Bangladesh. 3Chemistry Division, Atomic Energy Centre, P. O. Box 164, Dhaka-1000, Bangladesh.
Email: [email protected]

  •  Accepted: 16 September 2010
  •  Published: 31 December 2012



The aim of this study is to assess and report trace metal contamination of water samples of Balu River, collected from four stations which was sampled every three months covering the upstream and downstream sites of major industrial area of Tajgaon of Dhaka city. The dissolve concentration Iron, Lead, Cadmium, Manganese, Cobalt, Nickel, Chromium, Zinc, Copper of water samples was determined by atomic absorption spectrometry and were found to range from 1.79 to 50.15 mg/L, <17.96 to 28.25 μg/L, <3.00 to 3.30 μg/L, 28.28 to 730.79 μg/L, <4.05 to 53.92 μg/L, <10.66 to 19.07 μg/L, <4.05 to 8.44 μg/L, 8.39 to 76.86 μg/L, and 3.81 to 19.99 μg/L. The observed concentrations of the metals varied between sampling sites and also in different season. Metal concentration was higher in the dry (March) than rainy season in most cases. The pollution level is within the limit of Bangladesh standard and below the Environmental Protection Agency and World Health Organization standard except Iron. From this study, it is clear that the water of this river is not an immediate threat to ecosystem but most of the parameters are higher than other rivers of Bangladesh and in future may cause a threat to ecosystem.


 Key words: Trace metal, atomic absorption spectrophotometer, concentration.