Study of the Interaction of Lead with Corn Root Exudate—A Pulse Polarographic Study

Abstract The ability of corn root exudate to complex metal ions, in particular lead, has been investigated. It was found that exudate solubilizes lead present in different forms in the solid phase. Zn++ was found to compete moderately with Pb++ for exudate ligands while K+, Ca++ and Mg++ showed little competition. The importance of the complexing property of exudate in soil-water-plant relationships is discussed.