title: Levels of heavy metals in tissues of shingi fish (Heteropneustes fossilis) from Buriganga River, Bangladesh.
abstract: Heavy metal pollution was reported in commercially valuable freshwater edible fish in the Buriganga River, Bangladesh. The concentrations of As, Pb, Cd, Cr, Zn, and Cu were investigated in the muscle, gill, stomach, intestine, and liver of Heteropneustes fossilis caught at three stations to assess the degree of fish pollution by heavy metals. Significant differences in concentrations of analyzed elements were observed among different tissues, but not among the stations. The ranges of the measured concentrations (μg/g dry weight) in the tissues of H. fossilis were as follows: arsenic concentration was (0.2-0.4), (0.82-0.90), (3.29-3.99), (2.20-2.80), and (2.41-2.90), that of lead was (1.79-2.20), (4.95-6.55), (10.36-13.38), (5.74-9.70), and (18.20-18.79), that of cadmium was (0.3-0.4), (2.87-4.27), (1.03-1.63), (1.55-4.59), and (2.25-5.50), that of chromium was (1.40-1.70), (3.52-3.72), (2.28-5.29), (2.77-3.79), and (4.25-8.65), that of zinc was (24.47-28.82), (16.82-18.80), (20.22-22.20), (22.86-26.68), and (60.82-67.80), and that of copper was (7.80-8.50), (6.22-6.81), (38.21-44.25), (17.07-21.03), and (43.24-47.30) in the muscle, gill, stomach, intestine, and liver, respectively. This research showed that the liver appeared to be the main heavy metal storage tissue, while the muscle had the lowest levels of analyzed metals. The concentrations of metal in the muscles not exceeded the acceptable levels for a food source for human consumption.
authors.affiliation: Department of Zoology, University of Dhaka, Dhaka, 1000, Bangladesh. aleya2000@hotmail.com
authors.forename: Aleya
authors.initials: A
authors.lastname: Begum
authors.forename: Ahmed Ismail
authors.initials: AI
authors.lastname: Mustafa
authors.forename: Md Nurul
authors.initials: MN
authors.lastname: Amin
authors.forename: Tasrina Rabia
authors.initials: TR
authors.lastname: Chowdhury
authors.forename: Shamshad Begum
authors.initials: SB
authors.lastname: Quraishi
authors.forename: Nasrin
authors.initials: N
authors.lastname: Banu
mesh_terms: D000818:Animals; D001459:Bangladesh; D002397:Catfishes / Q000378:metabolism*; D004784:Environmental Monitoring; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism*; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical