Evaluation of Heavy Metals in Marinara chamomilla and lavandula angustifolia

Today soil and environmental pollution by heavy metals, has become a serious problem for human health. this pollution can be absorbed by agricultural products and enter the body. the purpose of this research is to investigate the contamination of 2 medicinal plants by 4 heavy metals in shiraz city. to achieve this, 2 kinds of medicinal plants matricaria chamomilla and lavandula angustifolia were chosen and bought from 6 different herbalists in shiraz and then were registered in medicinal plants herbarium of the school of pharmacy, shiraz university of medical sciences. plarograph was used for measuring the concentration of copper, zinc, cadmium, and lead in this study; and according to the achieved results, in marinara chamomilla and lavandula angustifolia samples the concentration of zinc was 2.66±0.76 mg/kg and 1.46±0.74 mg/kg, the concentration of lead was 0.092±0.069 mg/kg and 0.11±0.05 mg/kg , the concentration of copper was 0.237±0.080 mg/kg and 0.41±0.17 mg/kg and the concentration of cadmium was 0.017±0.009 mg/kg and 0.019±0.004 mg/kg, respectively. based on these results, it can be found that the concentration of heavy metals in these two medicinal plants wasn’t more than the standard concentration that was reported for similar plants.