A novel sensitive assay for determination of trace amount of iron(III) based on its fluorescence quenching effect on the self-ordered ring of quercetin

被引：6
|
作者：
Yu, CC [1 ]
Cheng, ZH [1 ]
机构：
[1] SW Normal Univ, Coll Chem & Environm Engn, Inst Environm Chem, Chongqing 400715, Peoples R China
来源：
ANALYTICAL LETTERS | 2003年 / 36卷 / 04期
关键词：
self-ordered ring (SOR) technique; quercetin; iron(III); fluorescence microscopic analysis;
D O I：
10.1081/AL-120018798
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A highly sensitive self-ordered ring technique is first proposed for the determination of trace amount of iron in water samples. The method is based on the capillary effect of solvent in a liquid drop on solid support. At pH 7.33, quercetin can form an SOR on a Me2SiCl2 modified glass slides with the aid of poly (vinyl alcohol)-124. Its maximum fluorescence intensity (I-max) can be quantitatively quenched by iron(III) over the range of 7.56-132.64 ng/mL and the limit of determination is 2.52 ng/mL. Four water samples and two human serum samples were determined satisfactorily.
引用
收藏
页码：767 / 780
页数：14
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