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Accumulation of heavy metals in farmed lates calcarifer of a tropical coastal lagoon

Tengku Kamarol Aznam, Tengku Nur Alia and Mohd Yusoff, Nurulnadia and Kassim, Zaleha and A., Ahmad and S., Pradit and Meng Chuan, Ong (2019) Accumulation of heavy metals in farmed lates calcarifer of a tropical coastal lagoon. Oriental Journal of Chemistry, 35 (3). pp. 1187-1194. ISSN 0970 - 020X E-ISSN 2231-5039

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Abstract

Heavy metals content in seafood, especially fish species has been of increasing concern to the human health. Nowadays, with increasing dependency towards farmed fish for sources of dietary protein and essential minerals, this heavy metals contamination in fishes are still questionable. This study aimed to investigate the accumulation of heavy metals in farmed fish, Lates calcarifer different organs from Setiu tropical coastal lagoon, Terengganu, Malaysia throughout its out-growing phase in the farm from the fingerling release up to their marketable size. Selected heavy metals namely Cu (Max:291.5±99.31), Zn (Max: 84.89±12.76), As (Max: 26.01±5.170), Cd (Max: 1.634±0.014), Hg (Max: 0.165±0.029) and Pb (Max: 0.634±0.550) in the fish was analyzed using ICP-MS after Teflon bomb closed digestion. The metal accumulation in each organ were generally found in the order of liver > gill > muscle. The concentrations of Cd and Zn in the liver were found to increase with fish size in each organ based on the association found in the principal component analysis (PCA). Meanwhile the overall findings observed negative correlation with L. calcarifer growth in fish size for all other heavy metals and organs. The amount of As in the fish muscle throughout its growth can be potentially harmful to humans with the highest averaged concentration at 3.29±0.65 mg/kg dw above the standard set by the Malaysian Food Regulation (1985) of more than 1 mg/kg. Meanwhile, all the other heavy metals were relatively safe and the concentrations well below the standard set by both national and international guidelines.

Item Type: Article (Journal)
Additional Information: 7204/76166
Uncontrolled Keywords: Heavy metals; Farmed later calcarifer; Tropical coastal lagoon; Human health risk
Subjects: Q Science > QD Chemistry
Q Science > QL Zoology
S Agriculture > SH Aquaculture. Fisheries. Angling
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Marine Science
Depositing User: Associate Prof. Dr. Zaleha Kassim
Date Deposited: 16 Dec 2019 12:41
Last Modified: 16 Dec 2019 12:41
URI: http://irep.iium.edu.my/id/eprint/76166

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