Radiolytic degradation of 2,4-dichlorophenoxyacetic acid in dilute aqueous solution: pH dependence

被引：13

作者：

Homlok, R. ^{[1
]}

Takacs, E. ^{[1
]}

Wojnarovits, L. ^{[1
]}

机构：

[1] Hungarian Acad Sci, Inst Isotopes, Budapest, Hungary

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2010年 / 284卷 / 02期

关键词：

2,4-Dichlorophenoxyacetic acid; 2,4-D; Degradation; Radiolysis; Mineralization; IONIZING-RADIATION; PHOTOCATALYTIC OXIDATION; HERBICIDE; MINERALIZATION; OZONATION; CATALYSTS; MECHANISM; 2,4-D; WATER; TIO2;

D O I：

10.1007/s10967-010-0494-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The reactions of hydroxyl radical and hydrated electron intermediates of water radiolysis were studied in the radiolytic degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) at pH values of 4, 6 and 8. The hydrated electron reactions are also suggested to contribute to the aromatic ring decomposition in addition to the highly effective hydroxyl radical reactions. The experimental results suggest also some contribution from the O (2) (-aEuro cent) /HO (2) (aEuro cent) pair to the degradation. The degradation efficiency was found to be the highest at pH 8 and the lowest at pH 6.

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页码：415 / 419

页数：5

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