Enhancement of selectivity of electrochemical detectors by kinetic discrimination in flow-injection systems

Laboratory Robotics and Automation Pub Date : 2000-08-31 DOI:10.1002/1098-2728(2000)12:4<205::AID-LRA6>3.0.CO;2-L

Tadeusz Krawczyński vel Krawczyk, Marek Trojanowicz, Nabil El-Murr

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引用次数: 3

Abstract

Appropriate design of flow-injection (FI) manifold and selection of suitable detectors may provide additional changes in the selectivity of the FI response compared to conventional nonflow measurements. As an example of such systems, based on data from the literature and our own experimental data, the potentiometric detection with different ion-selective electrodes and two different amperometric systems are discussed. Selectivity changes in flow-injection analysis (FIA) systems for ion-selective membrane electrodes depend on relative response to interferences observed in batch measurements. Simultaneous detection of pesticides is shown as an example of an amperometric FIA system with a bilayer lipid membrane working electrode. Simultaneous detection of lactate and ascorbate is shown in an FIA system with amperometric biosensing detection. © 2000 John Wiley & Sons, Inc. Lab Robotics and Automation 12:205–215, 2000

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流动注射系统中电化学检测器选择性的动力学鉴别

与传统的非流动测量相比，适当设计流动注射(FI)歧管和选择合适的检测器可以在FI响应的选择性方面提供额外的变化。作为此类系统的一个例子，基于文献数据和我们自己的实验数据，讨论了不同离子选择电极和两种不同安培系统的电位检测。流动注射分析(FIA)系统中离子选择性膜电极的选择性变化取决于对在批量测量中观察到的干扰的相对响应。以双层脂质膜工作电极安培FIA系统同时检测农药为例。乳酸和抗坏血酸的同时检测显示在FIA系统与安培生物传感检测。©2000 John Wiley &儿子,Inc。实验室机器人与自动化(英文版)，2000

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Laboratory Robotics and Automation

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