Zhang S, Liang L, Yuan Z
Department of Chemistry, Graduate School, University of Science and Technology of China, Beijing, 100039.
Se Pu. 1999 Jan;17(1):52-4.
The effects of the concentrations of beta-cyclodextrin(CD) in electrolyte on the cyclic voltammetric properties of o-, m-, p-dihydroxybenzenes at carbon-fiber microelectrode were studied. The inclusion between o-, m-, p-dihydroxybenzenes and beta-CD was investigated based on the molecular structures and experimental results. The study showed that the order of the inclusion interaction, from strong to weak, between dihydroxybenzenes and beta-CD, was m-, o- and p-dihydroxybenzenes. The effects of the concentrations of NH4Cl, SDS and beta-CD, and the pH values of the electrophoretic buffer on the migration time of o, m, p-dihydroxybenzenes were investigated. The assay of o, m, p-dihydroxybenzenes by micellar electrokinetic capillary chromatography with on-column amperometric detection at carbon-fiber microelectrode was developed. The recovery ranged from 98% to 103%.
研究了电解质中β-环糊精（CD）浓度对邻、间、对二羟基苯在碳纤维微电极上循环伏安性质的影响。基于分子结构和实验结果，研究了邻、间、对二羟基苯与β-环糊精之间的包合作用。研究表明，二羟基苯与β-环糊精之间包合相互作用的强弱顺序为间二羟基苯、邻二羟基苯、对二羟基苯。考察了NH4Cl、SDS和β-环糊精的浓度以及电泳缓冲液的pH值对邻、间、对二羟基苯迁移时间的影响。建立了在碳纤维微电极上柱安培检测的胶束电动毛细管色谱法测定邻、间、对二羟基苯的方法。回收率在98%至103%之间。
