Aerober Abbau von Endosulfan durch Bodenmikroorganismen / Aerobic Degradation of Endosulfan by Microorganisms

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Abstract
Microbial degradation of both the isomers of the cyclodiene insecticide endosulfan (hexachloro-bicyclo [2,2,1] hept-5-en-2,3-bis-hydroyxmethylene-cyclic sulfit) by Pseudomonadaceae in water has been investigated. Strong resorption of the applied insecticide (90%) by the bacteria has been ob­ served. The main metabolite of both the isomers was identified by EC-gaschromatography as the endosulfan-alcohol. Additionally the /?-isomere yielded small amounts of the cyclic endosulfan-ether and isomerisation to the more stable a-endosulfan