Estudo da degradação do herbicida ácido 2,4- diclorofenoxiacético (2,4-D) por meio da radiação gama do cobalto-60 em solução aquosa contendo ácido húmico

Química Nova

Sandro Xavier De Campos¹  Eny Maria Vieira¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos São Carlos SP

关键词: 2;    4-D;    degradation;    gamma radiation;   

DOI  :  10.1590/S0100-40422002000400003

来源: SciELO

【 摘 要 】

The use of pesticides in agriculture presents some problems to ecosytems as a consequence of their remaining in the environment. Conventional methods for environmental decontamination sometimes just transfer these residues from one place to another. The use of gamma radiation from cobalt-60 to induce 2,4-D degradation in aqueous solution containing humic acid was studied. Results show that the herbicide is completely degraded after treatment with a 30 kGy dose. There were decreases in the degradation of the 2,4-D when humic acid was added at all doses. Some radiolytic products are proposed. The 2,4-D radiolytic yields (G) from 2,4-D were calculated.

【 授权许可】

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