Title: Toxicity Effects of Extraction Solutions of Soil Doped with Heavy Metals to Photobacterium phosphoreum T_3
Abstract: Toxicity effects of composite pollution of heavy metals to Photobacterium phosphoreum were studied through determining the inhibition rate of Photobacterium phosphoreum in the extraction solutions of soil doped with Pb2+,Zn2+,Cd2+,Cu2+ and Cr3+.The response relation [Y=(-39.596±15.811)-(6.633±0.802)×(-lgXCu)(-lgXZn) +(59.466±8.731)×(-lgXCd)(-lgXCr)] was developed between concentration of Pb2+,Zn2+,Cd2+,Cu2+ and Cr3+ in extraction solutions of soil and the inhibition rate of Photobacterium phosphoreum based on the uniform experimental design,with the principle of equivalent-effect concentration ratio method and the multiple stepwise regression.The model had significant goodness-of-fit with advantages in F-test and t-test(P0.05) and a high adjusted correlation coefficient(R2adj=0.933).The results in the internal sample validation indicated that the maximum of relative deviation between experimental and calculated values of the inhibition rate was 8.6%.The mechanism analysis showed that the interaction between Cu2+ and Zn2+ was antagonistic effect;while the interaction between Cd2+ and Cr3+ was synergistic effect.The findings of this study underlined the necessity of further research on the antagonistic effect between Cu2+ and Zn2+ to reduce composite toxicity in heavy metal pollution control.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot