Determination of cadmium in herbal tooth powders purchased from local market in Lahore

Zoya Arshad

Abstract


This study was designed to determine the concentration of Cadmium in herbal tooth powders purchased from local markets in Lahore using Atomic Absorption Spectrophotometer as well as compare the Cd concentration in samples with permissible limit of Food and Agriculture Organization and World Health Organization. The concentrations of Cd in 15 samples of herbal tooth powders were determined. The concentration of Cd in 3 herbal toothpastes was also analysed to compare their concentration with that of herbal tooth powders. The samples of herbal tooth powders were subjected to acid digestion procedure with HNO3 and HClO4. Sample solutions were analysed by using Atomic Absorption spectrophotometer (AAS). Cadmium was detected in 8 samples and was not detected in 7 samples. The results showed that Cd was detected in the range between 0 ppm – 1.345 ppm in different herbal powders. Average concentration of Cd in different powdered products was 0.205 ppm. The concentrations of Cd in most of the samples under study were below the permissible limit approved by FAO/WHO (0.3 ppm). The results obtained showed that the herbal tooth powders from various local markets in Lahore have low concentrations of Cd and do not pose any serious health risk to public through usage of these products.

Keywords


Atomic Absorption Spectrophotometer; Cadmium; FAO/WHO; herbal tooth powders and permissible limit.

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References


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