reviewed that Zn can be readily accumulated in
leaves through translocation and the degree of accumulation is
positively correlated with the concentration of Zn in sediment.
also revealed that Pb can highly accumulate
in the stem of dicots,compared to the root.Nonetheless,the very
low concentration of Pb in S. apetala, irrespective of theconcen-
tration in sediment,suggested an avoidance mechanismper-
formed by S. apetala to