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Title

Concentration of toxic metals and potential risk assessment in edible fishes from Congo River in urbanized area of Kinshasa, DR Congo
Authors
Mata, Henry K.
Sivalingam, Periyasamy
Konde, Joel
Otamonga, Jean-Paul
Niane, Birane
Mulaji, Crispin K.
Kiyombo, Guillaume
Pote-Wembonyama, John
Published in Human and Ecological Risk Assessment. 2019
Abstract The objective of this research is to determine the concentration and potential health risks of toxic metals in six most consumed freshwater fish species (Auchenoglanis occidentalis, Bagrus ubangensi, Citharinus gibbosus, Distichondus fasciolatus, Marcusenius moorii and Schilbe mystus). A total of 126 samples of these fish species were collected from seven sites of Congo River in the vicinity of Kinshasa City, Democratic Republic of the Congo. Toxic metals (Cr, Co, Ni, Zn, Se, Ag, Cd, Sn, Sb and Pb) levels in fish muscle tissues were determined using Inductively Coupled Plasma Mass Spectrometry whereas Hg analysis was carried out using atomic absorption spectrophotometry. The maximum metal concentration (mg kg-1 wet weight) of Zn (59.72), Sb (5.98) and Pb (4.96) was detected in muscle tissues of Marcusenius moorii, Citharinus gibbosus and Distichondus fasciolatus respectively. Pb, Zn, and Hg values in many fish samples exceeded the permissible levels set by Food and Agriculture Organization and World Health Organization for human consumption. Given the concentrations of Pb in all fish species and Zn in Marcusenius moorii, human health implications are likely to occur on continuous consumption. Addition, the evaluation of potential health risks for fish consumers indicates that there may or not be adverse effects.
Keywords Toxic metals — Pollution — Edible fish — Hg toxicity — Human health risks — Congo River
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Full text
Article (Published version) (1.5 MB) - document accessible for UNIGE members only Limited access to UNIGE
Other version: https://www.tandfonline.com/doi/full/10.1080/10807039.2019.1598253
Structures
Faculté des sciences / Section des sciences de la Terre et de l'Environnement / Département F.-A. Forel des sciences de l'environnement et de l'eau
Centres et instituts / Institut des sciences de l'environnement
Research group FORE9 Environmental microbiology
Project
Swiss National Science Foundation: 31003A_173281
Citation
(ISO format) 		MATA, Henry K. et al. Concentration of toxic metals and potential risk assessment in edible fishes from Congo River in urbanized area of Kinshasa, DR Congo. In: Human and Ecological Risk Assessment, 2019. doi: 10.1080/10807039.2019.1598253 https://archive-ouverte.unige.ch/unige:115795

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Deposited on : 2019-04-08

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