Environmental degradation of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)

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Science  25 Mar 1977:
Vol. 195, Issue 4284, pp. 1337-1338
DOI: 10.1126/science.841331


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.

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