Accumulation mechanism of Cd and Pb in raddish roots.
萝卜根系对环境中重金属铅、镉富集的修复作用

The accumulation mechanism of Cd and Pb in raddish roots was studied The results showed that in the first 12 hours the accumulation process of Pb in roots was probably due to rapid adsorption, later, to slow chemical precipitation and cell absorption Especially, at high Pb content, chemical precipitation played a progressively more important role in Pb removal The accumulation of Cd in roots was mainly due to adsorption in the first 24 hours, later, absorption process maybe was dominant In Pb Cd treatment, the competitive adsorption and antagonistic absorption of Pb and Cd in roots had certain effect on the accumulation mechanism of Pb or Cd