Effect of Soil Contamination on Some Heavy Metals Content of Cannabis sativa

Heavy metals were investigated in the medicinal plant Cannabis sativa and the soil of the area from where the plant was collected using atomic absorption spectrophotometer. The plant samples were collected from five different locations of N.W.F.P, Pakistan. The plant parts including roots, stem and leaves were found to have the quantity of heavy metals corresponding to their contents in the soil. The purpose of the study is to make awareness among the people about the proper use and collection of medicinal plants, containing high level of heavy metals and their adverse health effects.