摘要
在pH7.0(Na2HPO4-NaH2PO4)的0.5mol/L KCl溶液中,二茂铁修饰的石墨粉-环氧树脂固态电极上,对苯二酚给出较好的电化学催化行为。在优化实验条件下,建立了循环伏安法直接测定对苯二酚的痕量分析方法。在1.00~800μmol/L浓度范围内,对苯二酚阳极峰电流与浓度呈良好的线性关系,Ip(μA)=1.751+0.1114c(μmol/L)(r=0.9953,SD=1.68),检出限为0.10μmol/L。方法简单、快速,直接用于污水中对苯二酚的检测,结果令人满意。
In pH 7.0 Na2HPO4 - NaH2PO4 buffer solution including 0. 5 mol/L KCl, p-dihydroquinone shows a electrocatalytic behavior on ferrocene modified graphite - epoxy solid electrode. Under the optimized experimental conditions, an electroanalytical method for determination of trace p-dihydroquinoe was established based on the electrocatalytic properties of the ferrocene modified electrode. The detection limit is 0. 10μmol/L with regression equation of Ip(μA) = 1. 751 +0. 111 4 c(μmol/L, r = 0. 995 4, SD = 1.68) in a concentration range of 1.00 - 800μmol/L. The method is simple and fast, and was applied to the detection of p-dihydroquinone in wastewater with satisfactory results (22.72 μmol/L).
出处
《分析测试学报》
CAS
CSCD
北大核心
2006年第5期45-47,51,共4页
Journal of Instrumental Analysis
基金
国家科技部国际合作重大项目资助(2004DFA02700)