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Environmental Degradation of 2,3,7,8-Tetrachlorodibenzo- p -dioxin (TCDD)

1977; American Association for the Advancement of Science; Volume: 195; Issue: 4284 Linguagem: Inglês

10.1126/science.841331

1095-9203

Donald G. Crosby, Anthony S. Wong,

Toxic Organic Pollutants Impact

Herbicide formulations containing known amounts of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and exposed to natural sunlight on leaves, soil, or glass plates lost most or all of the TCDD during a single day, due principally to photochemical dechlorination. Despite the known persistence of pure TCDD, it is not stable as a contaminant in thin herbicide films exposed to outdoor light.