Description
This book evaluates the risks to human health and the environment posed by exposure to alpha- and beta- hexachlorocyclohexanes (HCH). These two isomers are by-products in the manufacturing of lindane, and may be present in this pesticide as impurities. Alpha and beta HCH are also present in technical-grade HCH, which is used in agriculture and wood protection. Most environmental releases are linked to the use of technical-grade HCH and to the inappropriate disposal of residues produced when lindane is purified. In its concluding section, the report expresses serious concern over the widespread pollution of the environment with these isomers. As neither has any insecticidal action, the report concludes that use of technical-grade HCH products containing high concentrations of alpha- and beta-HCH is never justified. Other conclusions include the need to decrease dietary exposure, thereby also decreasing exposure via breast-milk, and to establish internationally acceptable levels of alpha and beta-HCH in food.
