Colorimetric Detection of Urine Glucose Based ZnFe2O4 Magnetic Nanoparticles

被引：457

作者：

Su, Li ^{[1
,2
]}

Feng, Jie ^{[1
,2
]}

Zhou, Ximin ^{[1
,2
]}

Ren, Cuiling ^{[1
,2
]}

Li, Honghong ^{[1
,2
]}

Chen, Xingguo ^{[1
,2
,3
]}

机构：

[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2012年 / 84卷 / 13期

基金：

中国国家自然科学基金;

关键词：

PEROXIDASE-LIKE ACTIVITY; CATALYTIC-ACTIVITY; NANOSTRUCTURES; MIMETICS; OXIDASE;

D O I：

10.1021/ac300939z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, we discovered that ZnFe2O4 magnetic nanoparticles (MNPs) possess intrinsic peroxidase-like activity. ZnFe2O4 MNPs exhibit several advantages such as high catalytic efficiency, good stability, monodispersion, and rapid separation over other peroxidase nanomimetics and horseradish peroxidase (HRP). ZnFe2O4 MNPs were used as a colorimetric biosensor for the detection of urine glucose. This method is simple, inexpensive, highly sensitive, and selective for glucose detection using glucose oxidase (GOx) and ZnFe2O4 MNPs with a linear range from 1.25 X 10(-6) to 1.875 x 10(-5) mol L-1 with a detection limit of 3.0 x 10(-7) mol L-1. The color change observable by the naked eyes based on the oxidation of 3,35,5'-tetramethylbenzidine (TMB) is the principle for the sensing of urine glucose level.

引用

页码：5753 / 5758

页数：6

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