TANG ZIQIANG~. Acute Toxicity of Substituted Phenols to Daphnia Magna Straus at Different pH Values by Kier’s Shape Index. [J]. 2006, (6): 685-689.DOI:
K) of 18 substituted phenols are calculated in this paper.By least squares method
quantitative structure-activity relationships(QSAR) between the acute toxicity(pIC
50
) and
1
K
2
K of 11 substituted phenols to Daphnia Magna Straus at different pH values are set up
The correlation coefficients of these models are 0.963(pH=6.0)
0.966(pH=7.8) and 0.846(pH=9.0)
respectively.The calculated values form these models agree with experimental values well.The cross-validation by using the more general leave-one-out method demonstrates the final models to be highly statistically reliable.The result of predicting for the acute toxicity(pIC
50
) of others 7 substituted phenol compounds shows that these models have better predictability.