STUDY ON CHAROPHYTES ABILITY TO PURIFY AND ACCUMALATE THE HEAVY METAL IONS

The authors studied the effects of several heavy metal ions in differen concentr ation of Cd2+, Hg2+,Pb2+ and Cr6+,on the ab ility to purify and accumulate the heavy metal ions in Chara vulgaris L. It was discovered that the effects of heavy metal ions on the Chara vuigaris L. changed with their different concentration. The tre nd was that the chlorophyll content and cell membrance permeability was decrease d with the increase of the heavy metal ions. The degree of the chlorophyll conte nt effected was Cr6+,Cd2+, Hg2+ and Pb2+,and that of c ell membrance permeability af fected was heavy metal ions and its ability to purify and accumluate one ion was not affected by others.