Pollution Research Paper

Vol 39, Nov Suppl. Issue, 2020; Page No.(237-240)

ASSESSMENT OF SELECTED WATER QUALITY PARAMETERS OF TURAG RIVER IN DHAKA, BANGLADESH

SAQUIB AHMAD KHAN, SADIA NAZNEEN KAROBI, SHAIKH SAYED AHAMMED, KHONDKAR AYAZ RABBANI AND MD. EKHTEKHARUL ISLAM

Abstract

The Turag is a very important river of Dhaka city that is under considerable stress from anthropogenic activities. There is a dearth of reliable and up to date studies conducted on the water quality of Turag that have utilized standard methods for assessment of water quality parameters. This study looks at selected water quality parameters from samples collected from nine pointsalong the length of Turag River during the monsoon season. Water quality parameters included in the study are pH, conductivity (μS), temperature (°C), and dissolved oxygen (mg/L), total dissolved solids (mg/L), chemical oxygen demand (mg/L), Cd (ppb), Cr (ppm) and Pb (ppb). All the samples tested contained Pb with highest concentration of 110.93 ppb at the National Zoo and the lowest value of 7.93 ppb at the Tongi area. Cr was found in two sites: the Tongi Ijtema Moydan and Tongi Bazar Bridge, while Cd was not detected in any of the samples. Tongi Ijtema Moydan also had the highest chemical oxygen demand (COD) value of 210 mg/L.

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