Titlebook: QSAR in Environmental Toxicology - II; Proceedings of the 2 Klaus L. E. Kaiser Conference proceedings 1987 D. Reidel Publishing Company, Do

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Relationship Between Toxicity and Bioconcentration for Some Organic Chemicals. II. Application of ter, one-compartment model assumptions, to estimate toxicant kinetic parameters. This was accomplished via non-linear curve fitting to time-toxicity data from typical LC50 toxicity tests. Preliminary results for a limited data set are presented. It appears that:

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QSAR of Acute Toxicity of 1,4-Di-Substituted Benzene Derivatives and Relationships with the Acute Ttoxicities of the corresponding mono-substituted benzene derivatives of the same general formula with R = H, both for the entire set (r. = 0.33; n = 133) and each of the subsets, particularly so for R = CI (r. = 0.71; n = 35). After elimination of highly toxic compounds, the remaining set of 105 di-

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Quantitative Structure-Activity Studies of Di-and Triorganotin Compounds,es linearly only to a certain point before declining. Triorganotin compounds approximately the size (total surface area) of tricyclohexyltin are at or perhaps slightly above such a maximum. These studies of di- and triorganotin compounds suggest that such approaches are highly promising tools for th

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Comparison of Fish Toxicity Screening Data and QSAR Predictions for 48 Aniline Derivatives,e equilibrium, limiting water solubility, or a combination of both of these factors. Several compounds exhibited toxicity at concentrations significantly below those predicted; these results were interpreted in terms of electrophile or proelectrophile mechanisms.