Assessment of Physico-Chemical Parameters of Water Samples Collected from the Southern Part of Bangladesh

Authors

  • Mohammad Shoeb Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Farhana Sharmin Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Md Nazrul Islam Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Lutfun Nahar Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Rafiza Islam Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh
  • Nargis Parvin Department of Chemistry, University of Dhaka, Dhaka-1000, Bangladesh

DOI:

https://doi.org/10.3329/dujs.v70i1.60381

Keywords:

Biological oxygen demand, dissolved oxygen, electrical conductivity, pH, surface water, total organic carbon

Abstract

Bangladesh has a vast natural water resources. In order to determine the water quality parameters such as pH, EC, DO, BOD, TOC, ions
i.e., NO3-, SO42-, PO43- and heavy metals, thirty surface water samples were collected from the southern part of Bangladesh including
the coastal regions of Patuakhali district and Kuakata sea beach area during the dry season. The pH of water samples was ranged from
7.58 to 8.77 with an average of 8.15. The average conductivity value was 8.83±2 mS/cm. The average DO was 8.33±1.82 mg/L and
BOD was 0.31±0.03 mg/L. TOC was found between 0.78 and 1.78 mg/L with an average of 1.24 mg/L. The concentration of NO3
-,SO42-, PO43- was determined by ion chromatography and only sulphate ion was detected in a very low concentration. Water samples
from different sources were analysed for five metals by AAS and the concentrations of Pb, Cd, Mn, Hg and As were below 0.2, 0.01,
0.22, 0.001 and 0.005 mg/L, respectively.

Dhaka Univ. J. Sci. 70(1): 49-57, 2022 (January)

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Published

2022-07-24

How to Cite

Shoeb, M., Sharmin, F., Islam, M. N. ., Nahar, L. ., Islam, R. ., & Parvin, N. (2022). Assessment of Physico-Chemical Parameters of Water Samples Collected from the Southern Part of Bangladesh. Dhaka University Journal of Science, 70(1), 49–57. https://doi.org/10.3329/dujs.v70i1.60381

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