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Fe(II)-EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability

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Fe(II)–EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability.pdf (74.79Kb)
Date
2001-05-24
Author
Yang, XF
Guo, XQ
郭祥群
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  • 化学化工-已发表论文 [14469]
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Abstract
The investigation of Fe(ii)-EDTA chelate-induced aromatic hydroxylation of terephthalate in pH 7.4 phosphate buffer solution and a new method for the evaluation of hydroxyl radical-scavenging ability are reported. The method is based on attack of the hydroxyl radical on the terephthalate to produce highly fluorescent 2-hydroxyterephthalate, which is detected fluorimetrically. The formation of hydroxyl radical is believed to be the result of the reduction of molecular oxygen by Fe(ii)-EDTA to form superoxide radical, which in turn dismutates to hydrogen peroxide, and then Fe(ii)-EDTA catalyzes the decomposition of hydrogen peroxide to produce hydroxyl radical. The mechanism of the generation of hydroxyl radical in the proposed system was confirmed. This study established a simple and inexpensive method for the evaluation of the scavenging ability of some compounds on hydroxyl radicals.
Citation
ANALYST,2001,126(6):928-932
URI
http://dx.doi.org/doi:10.1039/B100085N
https://dspace.xmu.edu.cn/handle/2288/12638

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