An investigation on the lead and cadmium content of cosmetics and sanitary products- a case study of toothbrush

Accordingly, this study was conducted to investigate the concentration of lead and cadmium of different toothbrush brands. For this purpose, a total number of 20 toothbrushes from different brands were taken randomly. The concentration of lead and cadmium in the toothbrushes was then specified using Graphite furnace atomic absorption spectroscopy (GFAAS), model AAS 6200. The samples were prepared based on the technique of acid digestion. According to the results, the average concentration of lead and cadmium in the toothbrushes were 0.13 μg g−1 and 0.02 μg g−1, respectively. The highest and lowest concentrations of lead in the samples were 0.44 μg g−1 and o.o1 μg g−1, respectively. The highest and lowest concentrations of cadmium were 0.15 μg g−1 and 0.01 μg g−1, respectively. In general, the concentration of lead and cadmium in all the toothbrushes was lower than the standard limit of 2002/94 / EC. There was observed a significant relationship between the concentration of lead and cadmium and the color of toothbrushes (P