Monitoring and Human Health Assessment of Trace Elements in Fresh and Dry Fish From Lake Kariba, Siavonga, Zambia.

Phaphedi M Poopedi, Sinegugu Khulu, Kawawa Banda, Heidi Richards, Mokgaetji Monyai, Imasiku Nyambe, Yoshitaka Uchida, Luke Chimuka

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Article in Biological trace element research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Phaphedi M PoopediDepartment of Chemistry, Faculty of Science, Engineering and Agriculture, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.ORCID http://orcid.org/0000-0002-9119-2866

Sinegugu KhuluSchool of Education, University of Witwatersrand, 27 St. Andrews Rd, Parktown, Johannesburg, 2193, South Africa.ORCID http://orcid.org/0000-0002-9633-8481

Kawawa BandaIntegrated Water Resources Management Centre, School of Mines, University of Zambia, P.O. Box 32379, Lusaka, Zambia.ORCID http://orcid.org/0000-0001-7083-3014

Heidi RichardsMolecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg, 2050, South Africa.ORCID http://orcid.org/0000-0003-1630-9400

Mokgaetji MonyaiMolecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg, 2050, South Africa.ORCID http://orcid.org/0000-0001-5465-1464

Imasiku NyambeIntegrated Water Resources Management Centre, School of Mines, University of Zambia, P.O. Box 32379, Lusaka, Zambia.ORCID http://orcid.org/0000-0002-6176-0084

Yoshitaka UchidaResearch Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo, 060-8589, Hokkaido, Japan.ORCID http://orcid.org/0000-0003-4354-7842

Luke ChimukaMolecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg, 2050, South Africa. luke.chimuka@wits.ac.za.ORCID http://orcid.org/0000-0002-8552-2478

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated the levels of trace elements in two fish species, Kariba bream (Oreochromis mortimeri) and Kapenta (Limnothrissa miodon) from Lake Kariba in two consecutive years, 2021 and 2022. Both Kariba Bream fresh/sun-dried muscle and sun-dried Kapenta tissues were digested using a microwave digestion system and analyzed using Inductively Coupled Plasma Mass Spectrometry. Mean concentration of trace elements between the first and second sampling differed significantly (P > 0.05). In the first sampling, concentrations of trace elements in sun-dried bream occurred in the order Fe > Al > Cr > Zn > Mn > As while Se, Cu, Cd, Pb and Hg were not detected. Sun-dried Kapenta displayed Al > Fe > Zn > Mn > Cr > Cu > As > Se with Cd, Pb and Hg not detected. Fresh bream showed Fe > Al > Zn > Cr > Mn > Cu > Se, with Pb, As, Cd and Hg not detected. In the second sampling, the order was, Fe > Al > Zn > Cr > Mn > Se > Cu > As in sun-dried bream; Fe > Zn > Mn > Al > Cr > Cu > Se > As in sun-dried Kapenta with Cd, Pb and Hg not detected in both. Fresh bream showed; Fe > Al > Zn > Mn > Cr > Se > Cu > As > Pb with Cd and Hg not detected. Notably, the concentrations of Fe, Mn and Cr in some samples exceeded the recommended limits by FAO/WHO. The THQ and HI for some elements were above the threshold value of 1, indicating potential risk of non-carcinogenic to human health for long-term consumption. These findings highlight the need for further investigation into post-fish handling, including land-use activities in and around the lake.

Indexed as

FishHazard IndexHealth riskLake KaribaTrace elements

Identifiers

PMID42552490

DOI10.1016/j.envres.2014.03.004

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