The use of a graphite-castor oil polyurethane composite electrode for the determination of hydroquinone in photographic developers

被引：47

作者：

Mendes, RK

Cervini, P

Cavalheiro, ÉTG

机构：

[1] Univ Sao Paulo, Dept Quim & Fis Mol, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil

来源：

TALANTA | 2006年 / 68卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

hydroquinone; composite electrode material; graphite; polyurethane; photographic developers;

D O I：

10.1016/j.talanta.2005.05.012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The performance of a new graphite-castor oil polyurethane composite electrode in the determination of hydroquinone in photographic developers in a differential pulse voltammetric (DPV) procedure is described. The 60% (graphite, w/w) composite electrode presented good stability, repeatability and accurate response. Limit of detection of 934 nmol L-1 was observed for hydroquinone within a linear dynamic range from 66 to 530 nmol L-1. The determination of hydroquinone in a photographic developer sample showed agreement with the label values in a 95% confidence level with maximum 2% relative error and recoveries between 100.1 and 100.4%. No need of sample preparation was required since the p-methylaminophenol sulfate (metol) present in the developer formulation did not interfered in the measurements. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：708 / 712

页数：5

共 22 条

[1]

BURKE S, 2004, LC GC EUROPE ONLIN S, P9

[2]

CARVALHO RM, 2000, ANAL CHIM ACTA, V420, P109, DOI DOI 10.1016/S0003-2670(00)01012-6

[3] New materials for electrochemical sensing .1. Rigid conducting composites [J].