巨大芽孢杆菌对沉积物中重金属形态的影响

Sediments is a special and important component of aquatic ecosystems,and it is also an important link in heavy metal pollution and repaire.This study is aimed at doing a research about the influence of the anti-chrome microorganism - Bacillus megaterium which has been sceened on the form of heavy metals in the sediments,by experiment in which microorganism was been cultivated by ladder addition with the method of BCR.The conclusion is that bacillus megaterium can change the form of heavy metals, and the heavy metal form of higher activity can be transformed into the more stable form.