Accumulation of Trace Metals in Indigenous Fish Species from the Old Brahmaputra River in Bangladesh and Human Health Ri
- PDF / 562,490 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 4 Downloads / 225 Views
Accumulation of Trace Metals in Indigenous Fish Species from the Old Brahmaputra River in Bangladesh and Human Health Risk Implications Sabikunnahar Shorna 1 & Saika Shawkat 1 & Anwar Hossain 1 & Shamshad B. Quraishi 2 & A. K. M. Atique Ullah 2 & Mohammad Mozammal Hosen 2 & Md. Kamal Hossain 3 & Badhan Saha 3 & Bijoya Paul 1 & Md. Habibullah-Al-Mamun 1 Received: 20 August 2020 / Accepted: 18 October 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this study, accumulation of the top six most toxic trace metals (Arsenic (As), Cadmium (Cd), Chromium (Cr), Mercury (Hg), Nickel (Ni) and Lead (Pb)) were assessed in six indigenous fish species (Barilius barila, Salmostoma acinaces, Gudusia chapra, Labeo bata, Corica soborna, and Sperata aor) collected from the Old Brahmaputra River in Bangladesh. Human health risk associated with these fish consumption was also evaluated. Metals were analyzed in whole body of fish by an atomic absorption spectrometer (AAS). Mean concentrations of metals (μg/g, wet weight) were in the range of As (< 0.02–0.278), Cd (< 0.002– 0.005), Cr (0.239–0.761), Hg (0.008–0.057), Ni (< 0.02–0.044), and Pb (< 0.01–0.038). The metal contents varied significantly among the fishes regarding their feeding habits and living habitats. Concentrations of As, Cr, Hg, and Pb were significantly higher in omnivorous species, whereas the benthopelagic species showed significantly higher accumulation of As (p < 0.05). The target hazard quotient (THQ) for noncarcinogenic risk and target cancer risk (TR) for carcinogenic risk were calculated to estimate the probabilities of experiencing these adverse health effects for the fish consumers. Metal-specific THQ values were all below 1 indicating no potential human health risk. Nonetheless, the hazard index (HI) values to estimate the effects from exposure to all metals collectively elucidated chronic noncarcinogenic health risk particularly from G. chapra consumption. The TR values revealed that there was carcinogenic risk from exposure to As through consumption of the fish. This study finally suggests a systematic and continuous monitoring of trace metal contamination in fishes from the river to ensure the fitness of this food item regarding the safety for human health. Keywords Trace metals . Indigenous fish . Exposure assessment . Human health risk . Old Brahmaputra River . Bangladesh
Introduction Chemical pollution particularly trace metal contamination in the aquatic environment is undoubtedly a global issue. Trace metals sourced from natural and/or anthropogenic origin continuously enter the waterbodies which may threaten the
* Md. Habibullah-Al-Mamun [email protected] 1
Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh
2
Analytical Chemistry Laboratory (ISO/IEC 17025:2005 Accredited), Chemistry Division, Atomic Energy Centre, Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh
3
Soil and Environment Section, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research
Data Loading...
