biogeochemical study of pb element in native plants and domestic animals living on irankoh mining area, isfahan province

abstract heavy metals are the most important components of environment pollution. soil contaminated by industrial and mining activities of these elements into the soil-plant-human cycle and accumulate in the human or animal body tissue to reach the levels of toxic for animals and humans. for this purpose, a broad sampling of soil, plant and sheep liver were taken and the amount of pb were tested .pb concentration was determined by atomic absorption spectrometry. the results indicated that the average concentration of heavy metals in soil, plants and sheep mining area is significantly higher than the control.average  pb levels in the liver of sheep mine 4.5 μg/g  is a threat to human health as the main consumer. finally recommend taken sampling of water, soil, plant and animal tissue to control metal pollution develop speed in the environment and occurs necessary provisions