Assessment of toxic metals in water and sediment of Pasur River in Bangladesh

Ali, Mir Mohammad and Ali, Mohammad Lokman and Islam, Md. Saiful and Rahman, Md. Zillur (2018) Assessment of toxic metals in water and sediment of Pasur River in Bangladesh. Water Science and Technology, 77 (5). pp. 1418-1430. ISSN 0273-1223

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Official URL: https://doi.org/10.2166/wst.2018.016

Abstract

This study was conducted to assess the levels of toxic metals like arsenic (As), chromium (Cr), cadmium (Cd), and lead (Pb) in water and sediments of the Pasur River in Bangladesh. The ranges of Cr, As, Cd, Pb in water were 25.76-77.39, 2.76-16.73, 0.42-2.98 and 12.69-42.67 μg/L and in sediments were 20.67-83.70, 3.15-19.97, 0.39-3.17 and 7.34-55.32 mg/kg. The level of studied metals in water samples exceeded the safe limits of drinking water, indicating that water from this river is not safe for drinking and cooking. Certain indices, including pollution load index (PLI) and contamination factor (Ci f) were used to assess the ecological risk. The PLI indicated progressive deterioration of sediments by the studied metals. Potential ecological risks of metals in sediment indicated low to considerable risk. However, the Ci f values of Cd ranged from 0.86 to 8.37 revealed that the examined sediments were strongly impacted by Cd. Considering the severity of potential ecological risk (PER) for single metal (Ei r), the descending order of contaminants was Cd >Pb> As> Cr. According the results, some treatment scheme must formulate and implement by the researchers and related management organizations to save the Pasur River from metals contamination.

Item Type: Article
Uncontrolled Keywords: Bangladesh; Pasur river; Sediments; Toxic metals; Water
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Q Science > QH Natural history
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Centre for Research in Biotechnology for Agriculture
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Sep 2019 07:22
Last Modified: 25 Sep 2019 07:22
URI: http://eprints.um.edu.my/id/eprint/22557

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