毛细管电泳多道电化学检测器的研制及其应用

报道了毛细管电泳多道电化学检测器的研制及其应用，安培检测器和电导检测器并联在同一毛细管电泳检测系统中，在同一缓冲体系，同一工作电极下对同一复杂的分析体系同时进行电导和安培检测；整个装置综合了电导检测和安培检测两种检测器的优点，性能优良，造价低廉，对实际样品的检测取得了令人满意的结果。     

高效毛细管电泳电化学检测器的研制

本文提出了一种用于高效毛细管电泳的新型安培电化学检测器设计，使用Ｎａｆｉｏｎ溶液制作的ＨＰＣＥ／ＥＤ接口，可有效地隔开两化学系统的干扰，且不引入附加体积，经对有机酚类化合物的胶束电动毛细管色谱分离与电化学检测知，该系统性能优良，对对苯二酚的检出限为３０ａｍｏｌ。     

高效毛细管电泳安培检测的进展

本文对高效毛细管电泳电化学检测方法中的安培检测进行了评述，安培检测具有灵敏度高，选择的特点，安培检测根据毛细管内径的大小有离柱安培检测和柱端安培检测，近年来脉冲安培分析法、化学修饰电极也已被引入毛细管电泳电化学检测。     

毛细管电泳的微机化安培法检测

毛细管电泳的微机化安培法检测胡深，李培标，程介克（武汉大学化学系，武汉，４３００７２）关键词毛细管电泳；微电极；安培法检测；微型计算机安培法电化学检测器用于毛细管电泳有独特的优点，如线性范围宽，选择性好，可以进行生物微环境电活性物质的分离检测［１，２...     

毛细管电泳-电化学/电化学发光及其微芯片技术

电化学和电化学发光检测法技术简单、原位和高灵敏度的特点使其能用作毛细管电泳、微芯 片毛细管电泳检测器.本文结合本实验室近年来的工作讨论了题示技术的最新进展.     

高效毛细管电泳碳柱电极安培电化学检测的理论研究

推导了高效毛细管电泳碳柱电极安培电化学检测的检测电流表达式，并以自制毛细管电泳／电化学检测系统对其进行了实验验证。对给定直径的工作电极，检测电流正比于碳柱工作电极插入检测毛细管长度的２／３次方，也正比于液体电渗平均体积流速的１／３次方。实验结果与公式吻合很好，说明了检测电流表达式的正确性。     

毛细管电泳多道电化学检测工作站

设计的毛细管电泳多通道电化学检测系统是一个可供在同一个检测环境下，用多台电化学检测器循环对物质进行测定的工作站。工作站采用计算机控制，利用电导和伏安检测器对样品同时进行电导、氧化和还原检测，并实时对数据进行采集，处理，以图形方式显示。     

毛细管电泳和火焰光度检测器的联用研究

研究了毛细管电泳与火焰光度检测器的联用技术及其应用。有机磷农药经毛细管电泳分离后，流出液被引入气相色谱的火娄光度检测器进行特效检测，毛细管电泳的接地电极接口采用毛细管裂缝处裹醋酸纤维膜的方法，而毛细管电泳和火焰光度检测器的接口则借用了气相色谱的进样口。     

耦联式安培-电导检测器的研制及其在CE中的应用

毛细管电泳(CE)检测器的研究是一个具有挑战性的课题.目前已发展的一些检测方法有光学、电化学、质谱的和放射同位素等.     

毛细管电泳芯片简化安培检测系统的研制

摘要开发出一种新型电化学检测器,该检测器具有噪声低、基线漂移小、检测限低、整体体积小及便于现场使用等优点.在集成ITO电极的PDMS/玻璃毛细管电泳芯片上,利用多巴胺标准样品对该检测器的性能进行了评价.     

A New Dual-electrode and Multi-channel Electrochemical Detection System for Capillary Electrophoresis

A new type of dual-electrode and multi-channel electrochemical detection technology for capillary electrophoresis is described in this paper.Two detectors(the amperometric detector and the conductometric detector) or two conductometric detectors are connected to the same capillary electrophoresis system.The whole system possesses the advantages of the two electrochemical detectors including sparing time,improving the analytical speed and expanding the sample range.The working electrode and detector cell are handled easily.The system was applied to sample detection with satisfactory results.     

Analysis of acyclovir by high performance capillary electrophoresis with on-column amperometric detection

The separation of acyclovir (ACV) by high performance capillary electrophoresis (HPCE) with on-column amperometric detection using alpha-amino-5-mercapto-3,4-dithiazole (AMD) as internal standard is described. The calibration line was linear in the range of 0.5-20 mg/L of ACV. The detection limit was 0.15 mg/L of ACV. Its recovery ranged from 98 to 101% with relative standard deviations (RSDs) from 1.9 to 3.2% (n = 5). This method was successfully used for determining ACV in some pharmaceuticals and human urine. Comparable results with HPCE with ultraviolet (UV) detection and amperometric detection were obtained.     

一种基于双工作电极-双通道的毛细管电泳电化学检测系统

报道了一种双工作电极-双通道毛细管电泳电化学检测系统，实现电导和安培 同时检测或者安培与安培检测联用，使两种方法相互补充，发挥各自的优势。其中 ，工作电极与检测池的制作工艺简单，操作简便，通过不锈钢针管和毛细管作为套 管，无需三维微调装置即可简单实现双工作电极的准确放置及分离毛细管与工作电 极的准确对接，并根据分析体系的需要采用不同类型的工作电极和检测器；同时采 用复式滤波电路解决了不同检测器之间的电场叠加对输出信号的干扰问题。采用该 装置可以同时检测复杂体系中的电活性和惰性物质，或同时测定只能氧化或只能还 原的物质，还可以对具有氧化还原性质的物质进行纯度的确证。将该装置应用于实 际样品的测定，节约了分析时间，提高了分析速度，扩大了检测范围，结果令人满 意。     

毛细管电泳安培法检测酚类化合物

使用自行设计组装的毛细管电泳柱端安培检测系统 ,对四个酚类化合物进行了分离检测。研究了工作电极、缓冲液及其 p H值、检测电压和分离电压对分离检测的影响。在优化条件下 ,4个酚在 5× 1 0 -6～ 5× 1 0 -4 mol/L范围内峰高与浓度成良好的线性关系 ,检测下限为 8.5× 1 0 -7mol/L     

Electrochemical detectors – tailormade techniques for liquid chromatography and capillary electrophoresis?

Electrochemical detectors for liquid chromatography and capillary electrophoresis are reviewed with special emphasis on electrode materials that allow the amperometric detection of otherwise non-electroactive compounds such as aliphatic alcohols, carbohydrates or amino acids. Noble metal electrodes can catalyze the oxidation of aliphatic compounds in alkaline media if multistep potential-time waveforms are employed. Various metal and metal oxide electrodes such as Ni, Cu or Co allow the detection of carbohydrates and similar compounds under constant potential conditions. Metallic copper electrodes operating in an amperometric mode or in a potentiometric mode can also serve as selective detectors for complexing species. A range of applications in combination with chromatography and electrophoresis is summarized. The current state of electrochemical detectors indicates that both amperometric and potentiometric detectors are on the verge of becoming tailormade detectors for micro-separation techniques.     

Recent developments in electrochemical flow detections—A review: Part I. Flow analysis and capillary electrophoresis

Recent years have provided numerous new examples of applying flow-through electrochemical detectors in chemical analysis. This review, based on about 250 original research papers cited from the current analytical literature, presents their application in flow analysis and capillary electrophoretic methods. Example applications are also given for arrays of electrochemical sensors in flow analysis and electrochemical detection in microfluidic systems. Potentiometric detection with ion-selective electrodes predominates in flow analysis carried out mostly in a flow-injection system, while amperometric and conductivity detections are most commonly employed in capillary electrophoresis.