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Author Hong, Jongki ♦ Kim, Do-Gyun ♦ Seo, Jung-Ju ♦ Lee, Chulhyun ♦ Chung, Chaejoon ♦ Kim, Kwang-Wook
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Abstract The electrical decomposition of 4-chlorophenol in water was examined with iridium dioxide doped on a titanium electrode. A number of electrical degradation products of 4-chlorophenol, such as hydroquinone and chlorohydroquinone via the addition of hydroxyl radicals, and dichlorophenol through addition of chlorine radical, were observed as major products. Moreover, hydroxylated chlorobiphenylethers, hydroxylated dibenzo-p-dioxin/furans and hydroxylated chlorobiphenyls formed by a dimerization process during the electrolysis process of 4-chlorophenol were also observed. On the other hand, benzoquinone, muconic acid and aldehyde derivatives that were further oxidative products of hydroquinone formed by photocatalysis process, were not observed. The electrical decomposition products of 4-chlorophenol were trimethylsilylated and then identified by gas chromatography-mass spectrometry. The degradation rate of 4-chlorophenol in water by iridium oxide electrode was measured against the electrical process duration. After iridium electrical process for 120 min, about 50% of 4-chlorophenol was converted into a number of products through oxidation processes. On the basis of the identified products, the degradation pathways of 4-chlorophenol under electrolysis process were proposed.
ISSN 09106340
Learning Resource Type Article
Publisher Date 2003-01-01
e-ISSN 13482246
Journal Analytical Sciences(analsci)
Volume Number 19
Issue Number 4
Page Count 6
Starting Page 537
Ending Page 542


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