DEGRADATION AND DEHALOGENATION OF POLYCHLOROBIPHENYLS AND HALOGENATED - AROMATIC-MOLECULES BY SUPEROXIDE ION AND BY ELECTROLYTIC REDUCTION

被引：55

作者：

SUGIMOTO, H ^{[1
]}

MATSUMOTO, S ^{[1
]}

SAWYER, DT ^{[1
]}

机构：

[1] TEXAS A&M UNIV, DEPT CHEM, COLLEGE STN, TX 77843 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1988年 / 22卷 / 10期

关键词：

AROMATIC COMPOUNDS - Decomposition - CHEMICAL REACTIONS - Reduction - Electrolysis - HALOGEN COMPOUNDS - Decomposition - Oxides;

D O I：

10.1021/es00175a009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Polyhalogenated aromatic hydrocarbons (e. g. , PCB's and hexachlorobenzene) are rapidly degraded by superoxide ion in dimethylformamide to carbonate and halide ions. The efficient destruction of such materials is accomplished via the in situ electrolytic reduction of dissolved oxygen to generate superoxide ion, which reacts with polyhalo aromatics by nucleophilic substitution. The reaction stoichiometries have been determined by cyclic voltammetric measurements, and the reactant/product profiles have been assayed by capillary gas chromatography and potentiometric titrations. Study results are discussed Electrochemical studies confirm that all PCB's can be dehalogenated via anaerobic electrolysis.

引用

页码：1182 / 1186

页数：5

共 24 条

[1] ANALYSIS OF POLYCHLORINATED-BIPHENYLS (PCB) BY GLASS-CAPILLARY GAS-CHROMATOGRAPHY - COMPOSITION OF TECHNICAL AROCLOR-PCB AND CLOPHEN-PCB MIXTURES [J].