Periodate-catalyzed oxidative coupling of aniline-derived p-aminophenol with p-xylenol as a detection method for hydroxyl radicals

Chi Liang Chern; Chia Jung Yu; Chin Hung Tsai; Tsan Zon Liu

doi:10.1081/AL-100107529

Periodate-catalyzed oxidative coupling of aniline-derived p-aminophenol with p-xylenol as a detection method for hydroxyl radicals

Chi Liang Chern, Chia Jung Yu, Chin Hung Tsai, Tsan Zon Liu^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

3 Scopus citations

Abstract

A simple spectrophotometric method for rapid detection of hydroxyl radical (OH) has been developed. The principle of the method depends upon the hydroxylation of a trapping agent, aniline, by .OH leading to the formation of various hydroxylated products. One of these hydroxylated products, p-aminophenol (PAP), is capable of undergoing an oxidative coupling reaction with p-xylenol (2,5-dimethylphenol) catalyzed by sodium periodate. The resultant indophenol-derivative formed can be measured spectrophotometrically at 635 nm. The net increment of absorbance at 635 nm can then be used to estimate the degree of hydroxylation of aniline, which is dependent upon the amount of .OH present in the assay system. A specific example for estimating the .OH-scavenging abilities of food products is also given.

Original language	English
Pages (from-to)	2477-2484
Number of pages	8
Journal	Analytical Letters
Volume	34
Issue number	14
DOIs	https://doi.org/10.1081/AL-100107529
State	Published - 2001
Externally published	Yes

Keywords

Hydroxyl radical
Oxidative coupling
P-aminophenol

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10.1081/AL-100107529

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title = "Periodate-catalyzed oxidative coupling of aniline-derived p-aminophenol with p-xylenol as a detection method for hydroxyl radicals",

abstract = "A simple spectrophotometric method for rapid detection of hydroxyl radical (OH) has been developed. The principle of the method depends upon the hydroxylation of a trapping agent, aniline, by .OH leading to the formation of various hydroxylated products. One of these hydroxylated products, p-aminophenol (PAP), is capable of undergoing an oxidative coupling reaction with p-xylenol (2,5-dimethylphenol) catalyzed by sodium periodate. The resultant indophenol-derivative formed can be measured spectrophotometrically at 635 nm. The net increment of absorbance at 635 nm can then be used to estimate the degree of hydroxylation of aniline, which is dependent upon the amount of .OH present in the assay system. A specific example for estimating the .OH-scavenging abilities of food products is also given.",

keywords = "Hydroxyl radical, Oxidative coupling, P-aminophenol",

author = "Chern, {Chi Liang} and Yu, {Chia Jung} and Tsai, {Chin Hung} and Liu, {Tsan Zon}",

year = "2001",

doi = "10.1081/AL-100107529",

language = "英语",

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T1 - Periodate-catalyzed oxidative coupling of aniline-derived p-aminophenol with p-xylenol as a detection method for hydroxyl radicals

AU - Chern, Chi Liang

AU - Yu, Chia Jung

AU - Tsai, Chin Hung

AU - Liu, Tsan Zon

PY - 2001

Y1 - 2001

N2 - A simple spectrophotometric method for rapid detection of hydroxyl radical (OH) has been developed. The principle of the method depends upon the hydroxylation of a trapping agent, aniline, by .OH leading to the formation of various hydroxylated products. One of these hydroxylated products, p-aminophenol (PAP), is capable of undergoing an oxidative coupling reaction with p-xylenol (2,5-dimethylphenol) catalyzed by sodium periodate. The resultant indophenol-derivative formed can be measured spectrophotometrically at 635 nm. The net increment of absorbance at 635 nm can then be used to estimate the degree of hydroxylation of aniline, which is dependent upon the amount of .OH present in the assay system. A specific example for estimating the .OH-scavenging abilities of food products is also given.

AB - A simple spectrophotometric method for rapid detection of hydroxyl radical (OH) has been developed. The principle of the method depends upon the hydroxylation of a trapping agent, aniline, by .OH leading to the formation of various hydroxylated products. One of these hydroxylated products, p-aminophenol (PAP), is capable of undergoing an oxidative coupling reaction with p-xylenol (2,5-dimethylphenol) catalyzed by sodium periodate. The resultant indophenol-derivative formed can be measured spectrophotometrically at 635 nm. The net increment of absorbance at 635 nm can then be used to estimate the degree of hydroxylation of aniline, which is dependent upon the amount of .OH present in the assay system. A specific example for estimating the .OH-scavenging abilities of food products is also given.

KW - Hydroxyl radical

KW - Oxidative coupling

KW - P-aminophenol

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U2 - 10.1081/AL-100107529

DO - 10.1081/AL-100107529

M3 - 文章

AN - SCOPUS:0035184326

SN - 0003-2719

VL - 34

SP - 2477

EP - 2484

JO - Analytical Letters

JF - Analytical Letters

IS - 14

ER -

Periodate-catalyzed oxidative coupling of aniline-derived p-aminophenol with p-xylenol as a detection method for hydroxyl radicals

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Keywords

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