title: Heavy metals in sediment and their accumulation in commonly consumed fish species in Bangladesh.
abstract: Six heavy metals (chromium [Cr], nickel [Ni], copper [Cu], arsenic [As], cadmium [Cd], and lead [Pb]) were measured in sediments and soft tissues of eleven commonly consumed fish species collected from an urban river in the northern part of Bangladesh. The abundance of heavy metals in sediments varied in the decreasing order of Cr > Ni > Cu > Pb > As > Cd. The ranges of mean metal concentrations in fish species, in mg/kg wet weight (ww), were as follows: Cr, 0.11-0.46; Ni, 0.77-2.6; Cu, 0.57-2.1; As, 0.43-1.7; Cd, 0.020-0.23; and Pb, 0.15-1.1. Target hazard quotients (THQs) and target carcinogenic risk (TR) showed the intake of As and Pb through fish consumption were higher than the recommended values, indicating the consumption of these fish species is associated with noncarcinogenic and carcinogenic health risks.
authors.affiliation: a Faculty and Graduate School of Environment and Information Sciences, Yokohama National University , Yokohama , Kanagawa , Japan.|b Department of Soil Science , Patuakhali Science and Technology University, Dumki , Patuakhali , Bangladesh.
authors.forename: Md Saiful
authors.initials: MS
authors.lastname: Islam
authors.affiliation: c Department of Oceanography , University of Dhaka , Dhaka , Bangladesh.
authors.forename: Md Kawser
authors.initials: MK
authors.lastname: Ahmed
authors.affiliation: a Faculty and Graduate School of Environment and Information Sciences, Yokohama National University , Yokohama , Kanagawa , Japan.|d Department of Fisheries , University of Dhaka , Dhaka , Bangladesh.
authors.forename: Md
authors.initials: M
authors.lastname: Habibullah-Al-Mamun
mesh_terms: D000818:Animals; D001151:Arsenic / Q000032:analysis*; D001459:Bangladesh; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005399:Fishes; D005506:Food Contamination / Q000032:analysis*; D019015:Geologic Sediments / Q000032:analysis*; D006801:Humans; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D001151:Arsenic
keywords: Bangladesh; bioaccumulation; fish; health risk; metal pollution; sediment