Toxicidade de Líquidos Geradores de Espuma (Lge) ao Ambiente Aquático Através Do Bioensaio Utilizando Daphnia similis.
Abstract
Palavras-chave: Espuma Formadora de Película Aquosa, Toxicidade, Ecossistema Aquático Dulcícola, Daphnia.
Perfluorinated compounds are a class of substances with chemical properties which received great attention because of their adverse effects on biota, especially in the aquatic environment. The use of aqueous film-forming foam (AFFF) has been related to environmental contamination, following the handling, storage and use, especially in class B firefighting. Studies have associated the use of AFFF to toxic effects from its compounds to the aquatic ecosystem, which led the Stockholm Convention to restrict its use. In Brazil, despite the large-scale use, there is no data on the annual use or commercialization of this product. This study evaluated the toxicity of some brands of AFFF used in the Aratu / Tequimar Terminal fire in 2015, through the application of acute bioassays using the microcrustacean Daphnia similis. Environmentally safe dilutions for this species are well below those recommended on product labels. This study provides basic information for the development of public policies for the management of AFFF pollutants in freshwater ecosystems.
Keywords: Aqueous Film Forming Foam, Toxicity, Aquatic Ecosystem, Daphnia
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