Determination of some heavy metals in selected cosmetic products sold in kano metropolis, Nigeria
نویسندگان
چکیده
The study was aimed at assessing the levels of some toxic metals in different cosmetic products sold at different shopping malls and markets in Kano Metropolis. The cosmetic items included ten face powder, ten skin lightening creams and ten lipsticks of various prices. The cosmetics were digested and analyzed for heavy metals (manganese, nickel, copper, cadmium, chromium and lead) using atomic absorption spectrophotometer. The range of the concentrations in skin lightening creams is 4.90-24.51, 3.68-11.03, 4.24-8.48, 0.14-1.32, 0-0.05 and 0.05-0.14 mg kg-1 for Mn, Ni, Cu, Cd, Cr and Pb respectively. The range in face powders are 4.90-44.12, 3.68-11.03, 4.24-8.48, 0.07-1.74, 0-0.03 and 0.08-0.33 mg kg-1 for Mn, Ni, Cu, Cd, Cr and Pb respectively. The concentration ranges in lipsticks are 2.45-22.06, 0-11.03, 4.24-12.71, 0.07-1.67, 0-0.05 and 0-0.19 mg kg-1 for Mn, Ni, Cu, Cd, Cr and Pb respectively. T test showed no statistical significant difference in concentrations of metals between the expensive and cheap cosmetic products. It is obvious from the present study that the use of these cosmetic products exposes users to low concentrations of toxic heavy metals which could constitute potential health risk to users since they are known to accumulate in biological systems over time. Similarly, regular monitoring of other heavy metals and chemicals used in the manufacture of cosmetics products which may cause health risks to users should be emphasized.
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