title: Trace metal contamination in commercial fish and crustaceans collected from coastal area of Bangladesh and health risk assessment.
abstract: Trace metals contamination in commercial fish and crustaceans have become a great problem in Bangladesh. This study was conducted to determine seven trace metals concentration (Cr, Ni, Cu, Zn, As, Cd, and Pb) in some commercial fishes and crustaceans collected from coastal areas of Bangladesh. Trace metals in fish samples were in the range of Cr (0.15 - 2.2), Ni (0.1 - 0.56), Cu (1.3 - 1.4), Zn (31 - 138), As (0.76 - 13), Cd (0.033 - 0.075), and Pb (0.07 - 0.63 mg/kg wet weight (ww)), respectively. Arsenic (13 mg/kg ww) and Zn (138 mg/kg ww) concentrations were remarkably high in fish of Cox's Bazar due to the interference of uncontrolled huge hatcheries and industrial activities. The elevated concentrations of Cu (400), Zn (1480), and As (53 mg/kg ww) were also observed in crabs of Cox's Bazar which was considered as an absolutely discrepant aquatic species with totally different bioaccumulation pattern. Some metals in fish and crustaceans exceeded the international quality guidelines. Estimated daily intake (EDI) and target cancer risk (TR) revealed high dietary intake of As and Pb, which was obviously a matter of severe public health issue of Bangladeshi coastal people which should not be ignored and concentrate our views to solve this problem with an integrated approaches. Thus, continuous monitoring of these toxic trace elements in seafood and immediate control measure is recommended.
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan. mohammad-raknuzzaman-jc@ynu.jp.|Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh. mohammad-raknuzzaman-jc@ynu.jp.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Raknuzzaman
authors.affiliation: Department of Oceanography, University of Dhaka, Dhaka, 1000, Bangladesh.
authors.forename: Md Kawser
authors.initials: MK
authors.lastname: Ahmed
authors.affiliation: Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, 8602, Bangladesh.
authors.forename: Md Saiful
authors.initials: MS
authors.lastname: Islam
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan.|Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh.
authors.forename: Md
authors.initials: M
authors.lastname: Habibullah-Al-Mamun
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tokumura
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Sekine
authors.affiliation: Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan.
authors.forename: Shigeki
authors.initials: S
authors.lastname: Masunaga
mesh_terms: D000818:Animals; D001459:Bangladesh; D003445:Crustacea / Q000737:chemistry*; D004784:Environmental Monitoring; D005399:Fishes; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Bangladesh; Crustaceans; Fish; Health risk; Trace metals