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Received May 17, 1992,Revised , Accepted , Available online

Volume 4,1992,Pages 81-86

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The environmental behaviour of insecticide 1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea(CCU) were studied.The results indicated that the insecticide concerning the risk assessment and safe for application of the chemical was not a long-persistent compound in the environment and degraded fastly in plant,soil,water and air.The maior degradation products of CCU were found to bc 4-chloroaniline,4-chlorophenyl urea, 2-chlorobenzamide, 2-chlorobenzoic acid, chloroisocyanatobenzene and 2-chloro-N-chlorophenyl benzamide.The study demonstrated that the insecticide would not be harmful to environment,especmuy to groundwater.However,attention should be paid to the potential problem caused by its degradation products.

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