Abstract
The need to obtain a tool for estimation of toxicity parameters for chemicals supports, the postulation of predictive models as an alternative to conventional classical assays. The use of micellar solutions of Brij35 as mobile phases in reversed phase liquid chromatography has proven to be valid in predicting some biological activities of different kinds of drugs. In this paper, the correlations between retention of phenoxy acids using different concentrations of Brij35 as micellar mobile phase in micellar liquid chromatography (MLC) and migration in micellar electrokinetic chromatography (MEKC) with several toxicity parameters are studied. Adequate correlations retention- and migration-toxicity (LC 50 in fish, daphnia and mysid shrimp, EC 50 in green algae and daphnia, and values of chronic toxicity in fish and green algae) of phenoxy acids are obtained. The approach proposed in this paper, involving quantitative retention- and migration-toxicity relationships (QRAR and QMAR) can be very useful in the development of new phenoxy acid herbicides.
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