Occurrence of priority trace metals in tomatoes (Solanum lycopersicum L.) from some areas of Uasin Gishu County, Kenya





Cancer risk, Eldoret, Estimated daily intake, Target hazard quotient


This study determined the concentration of zinc, lead and cadmium in tomatoes consumed in some areas of Uasin Gishu, Kenya. Samples were taken in quintuplicate from Huruma and Bahati estates (Eldoret) and Chebaiywo (Kesses) and their metalliferous content were determined by atomic absorption spectroscopy. All samples had detectable levels of trace metals, with lead recording the highest concentration of 43.20 ± 0.31 mg/kg. Zinc concentrations were below WHO guidelines. Daily intakes ranged from 8.25 ×  to 2.59 ×  mg/kg/day. Though there are no probable cancer risks, hazard quotients indicated that deleterious health effects could arise from daily consumption of tomatoes.

Author Biographies

Decrah Moraa Nyangena, Moi University, Eldoret, Kenya

Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies

James Oagare Arasa, Moi University, Eldoret, Kenya

Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies

Timothy Omara, Moi University, Eldoret, Kenya

Reasearcher, Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies


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