Some Compounds Show Dramatic Differences in Toxicity And Rate of Break Down Between Isomers
Researchers at the University of California, Riverside have demonstrated that isomers – or the mirror-image structures – of some pesticides, although chemically identical, have very different biological and environmental impacts between the two sides. This may have significant implications for risk assessment and research and development directions of new products.
The environmental risks of pesticides have been traditionally evaluated on the basis of their specific chemical structure, according to Jay Gan, a UCR professor of environmental chemistry. He found, however, that this group, known as chiral pesticides, including many widely used organophosphates and synthetic pyrethroids, pose previously uncalculated toxic risks due to the differing biological reactions of the isomers in the environment.
Ricardo Duran | EurekAlert!
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