Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Degradation of 2,4-Dichlorophenoxyacetic Acid (2,4-D) by Cobalt-60 Gamma Radiation in a Methanolic Solution Containing Humic Acid
Sandro X. CamposEny M. Vieira
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2006 Volume 35 Issue 6 Pages 642-643

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Abstract

In this study, cobalt-60 gamma radiation was used to degrade 2,4-dichlorophenoxyacetic acid herbicide (2,4-D) in methanol in the presence of humic acid. The 2,4-D solution was irradiated with different doses. The herbicide was completely degraded after treatment with a dose of 150 kGy. The influence of humic acids was verify in higher doses (75 and 100 kGy) only. ESI/MS and MS/MS identified 3-chlorophenol as the intermediate product. The radiolytic yield (G) of 2,4-D degradation was calculated.

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© 2006 The Chemical Society of Japan
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