Evaluation of heavy metals contamination in rabbit fish (signus sutor) from selected landing sites in Zanzibar, Tanzania

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dc.contributor.authorMohamed,Zeyana Nassor
dc.contributor.authorZacharia,Abdulsudi Issa
dc.contributor.authorNyamete,Frida
dc.date.accessioned2024-03-19T11:06:38Z
dc.date.available2024-03-19T11:06:38Z
dc.date.issued2023
dc.descriptionJournal Article
dc.description.abstractThe increase of heavy metals concentrations in aquatic and terrestrial environments and their toxicity is of global concern. The bioaccumulation of toxic metals in fish poses a serious risk to human health when consumed. This study assessed the quality of Rabbit fish (Signus Sutor) and their associated health risks from four landing sites (namely Malindi, Mazizini, Kizimkazi and Matemwe) in Zanzibar. The concentrations of toxic metals, including Lead (Pb), Cadmium (Cd), Copper (Cu), Chromium (Cr), Nickel (Ni), and Arsenic (As), in the fish muscle were scrutinized using inductively coupled plasma optical emission spectrometry (ICP-OES). The detected mean concentration (mg/kg) of Pb, As, Cr, Cd, Cu, and Ni at Malindi were 0.25±0.14, 2.22±0.44, 0.02±0.02, 0.01±0.00, 0.02±0.02 and 0.00±0.00 respectively; at Kizimkazi were 0.39±0.39, 2.30±0.44, 0.11±0.01, 0.07±0.04, 0.17±0.13 and 0.15±0.04 respectively: at Matemwe were 0.38±0.12, 0.52±0.14, 0.04±0.02, 0.05±0.01, 0.65±0.21 and 0.09±0.03 respectively; and Mazizini were 0.21±0.12, 5.56±1.37, 0.02±0.02, 0.03±0.01, 0.05±0.02 and 0.15±0.05 respectively. The mean concentration levels detected for all the elements in the fish gathered from all four landing sites were below international and local maximum (FAO/WHO) permissible limits for human consumption, except for Arsenic (As) and lead (Pb). The study also investigated the relationship between fish size and metal concentration which shows a positive correlation for Cu and Ni. However, it was negative for the remaining metals, possibly due to ecological and metabolic differences. The study emphasizes the necessity for regular monitoring of the marine environment and enforcement of hygienic regulations, as well as the treatment of land-based pollutants before they are discharged into the marine environment to protect fish quality
dc.identifier.citationNassor Mohamed Z, Issa-Zacharia A, Nyamete F. Evaluation of heavy metals contamination in Rabbit Fish (Signus Sutor) from selected landing sites in Zanzibar, Tanzania. J food safe & hyg 2023; 9 (4): 252-267. DOI: 10.18502/jfsh.v9i4.15001
dc.identifier.isbnDOI: 10.18502/jfsh.v9i4.15001
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/5928
dc.language.isoen
dc.publisherJournal of Food Safety and Hygiene
dc.subjectHeavy metal
dc.subjectPollution
dc.subjectBioaccumulation
dc.subjectFish quality
dc.subjectFood safety
dc.subjectHealth risk
dc.titleEvaluation of heavy metals contamination in rabbit fish (signus sutor) from selected landing sites in Zanzibar, Tanzania
dc.typeArticle

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