Sensitive and Facile Determination of Catechol and Hydroquinone Simultaneously Under Coexistence of Resorcinol with a Zn/Al Layered Double Hydroxide Film Modified Glassy Carbon Electrode

被引：128

作者：

Li, Maoguo ^{[1
]}

Ni, Fang ^{[1
]}

Wang, Yinling ^{[1
]}

Xu, Shudong ^{[1
]}

Zhang, Dandan ^{[1
]}

Chen, Shuihong ^{[1
]}

Wang, Lun ^{[1
]}

机构：

[1] Anhui Normal Univ, Anhui Key Lab Chemobiosensing, Coll Chem & Mat Sci, Wuhu 241000, Peoples R China

来源：

ELECTROANALYSIS | 2009年 / 21卷 / 13期

关键词：

Dihydroxybenzene isomers; Layered double hydroxides; Electrodeposition; Simultaneous determination; Film modified electrode; Thin films; Sensors; SOLID-PHASE EXTRACTION; SPECTROPHOTOMETRIC DETERMINATION; ELECTROCHEMICAL SYNTHESIS; ELECTROCATALYSIS; DERIVATIVES; GLUCOSE; SAMPLES;

D O I：

10.1002/elan.200804573

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A stable dihydroxybenzene sensor was fabricated by electrochemical deposition of Zn/Al layered double hydroxide film on glassy carbon electrode (LDHf/GCE). The sensitive and facile electrochemical method for the simultaneous determination of catechol (CA) and hydroquinone (HQ) under coexistence of resorcinol (RE) has been achieved at the LDHf/GCE in phosphate buffer solution (pH 6.5). Under the optimized conditions, the differential pulse voltammetry response of the modified electrode to CA (or HQ) shows a linear concentration range of 0.6 mu M to 6.0 mM (or 3.2 mu M to 2.4 mM) with a correlation coefficient of 0.9987 (or 0.9992) and the calculated limit of detection is 0.1 mu M (or 1.0 mu M) at a signal-to-noise ratio of 3. In the presence of 50 mu M isomer, the linear concentration ranges for CA and HQ are 3.0 mu M to 1.5 mM and 12.0 mu M to 0.8 mM, respectively. The detection limits are 1.2 mu M and 9.0 mu M. Further, the proposed method has been performed to successfully detect dihydroxybenzene isomers in analysis of real samples, such as water and tea.

引用

页码：1521 / 1526

页数：6

共 33 条

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