In this study the transfer factors values clearly indicate that by selecting particular vegetables, it is possible to reduce the risk of human exposure to soil metal contaminations.
Based on the results, lettuce and Swiss chard are high Fe, Mn and Cu accumulators; lettuce, Swiss chard and tomato are high Zn accumulators; tomato and lettuce are high Cd accumulators; green pepper, cabbage, tomato and onion are high Pb accumulators.
Based on the toxicity of heavy metals more attention for Pb and Cd is needed.