It is necessary to measure, the concentration of toxic trace elements in plant and their products. If toxic element present in soil and geological strata or in ground water, they may reach to plant and their product too. For example in some part of Madhya Pradesh, West Bengal and Andhra Pradesh, rice contains objectionable concentration of Arsenic. The main cause was found the ground water was enriched in arsenic. Thus, This is good to study trace elements in plants. However the maximum permissible limits depend upon one constituents to other. The guide line and other details are well published and available.