Assessment of heavy metals concentration in water and Tengra fish (Mystus vittatus) of Surma River in Sylhet region of Bangladesh

Ariful Islam 1 , Md. Motaher Hossain 2 , Md. Matiur Rahim 3 , Md. Mehedy Hasan 4 , Mohammad Tariqul Hassan 5 , Maksuda Begum 6 , Zobaer Ahmed 7

1   Department of Fisheries, International Institute of Applied Science and Technology (IIAST), Rangpur, BANGLADESH
2   Department of Fisheries Technology and Quality Control, Sylhet Agricultural University, Sylhet-3100, BANGLADESH
3   Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific & Industrial Research (BCSIR), BANGLADESH
4   Department of Fisheries Technology and Quality Control, Sylhet Agricultural University, Sylhet-3100, BANGLADESH
5   Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific & Industrial Research (BCSIR), BANGLADESH
6   Institute of Food Science and Technology (IFST), Bangladesh Council of Scientific & Industrial Research (BCSIR), BANGLADESH
7   Faculty of Fisheries, Sylhet Agricultural University, Sylhet-3100, BANGLADESH

✉ Coressponding author: See PDF.

doi https://doi.org/10.26832/24566632.2019.040204

doi

Abstract

The study was carried out to assess the concentration of heavy metals in water and Tengra fish (Mystus vittatus) of the Surma River, the largest water basin ecosystem covering the north-eastern parts of Bangladesh. Water and Tengra fish (M. vittatus) samples were collected from a total of six sampling stations in which three sampling stations were in Sylhet district and the rest three were in Sunamganj district. Samples were collected from February 2017 to June 2017 on a monthly basis. Water and Tengra fish (M. vittatus) samples were analyzed for the detection of heavy metals viz., lead (Pb), chromium (Cr) and cadmium (Cd) concentrations. Atomic absorption spectrophotometry was used for the detection of heavy metals after digestion of the samples. Pb and Cr were detected from both water and Tengra fish (M. vittatus) samples collected from all the six sampling stations of Sylhet and Sunamganj district. But, Cd was not found both in water and Tengra fish (M. vittatus) during the study period. This study concluded that the detected concentrations of metals (Pb and Cr) in the studied Tengra fish (M. vittatus) muscles were accepted by the international legislation limits and are safe for human consumption. But in water, Pb is the only metal that potentially poses the ecological risk to the water body as it exceeds the acceptance level recommended by World Health Organization (WHO). Consequently, close monitoring of metals pollution of the Surma River is recommended with a view to minimizing the health risk of the population that depend on the river for their water and fish supply.

Keywords:

Health risk assessment, Heavy metal, Human consumption, Surma River, Tengra Fish (Mystus vittatus)

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Published

2019-06-10

How to Cite

Islam, A., Hossain, M. M., Rahim, M. M., Hasan, M. M., Hassan, M. T., Begum, M., & Ahmed, Z. (2019). Assessment of heavy metals concentration in water and Tengra fish (Mystus vittatus) of Surma River in Sylhet region of Bangladesh. Archives of Agriculture and Environmental Science, 4(2), 151-156. https://doi.org/10.26832/24566632.2019.040204

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Research Articles