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首页> 外文会议>SPIE Conference on Sensing for Agriculture and Food Quality and Safety >Portable integrated capillary-electrophoresis system using disposablepolymer chips with capacitively coupled contactless conductivitydetection for on-site analysis of foodstuff
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Portable integrated capillary-electrophoresis system using disposablepolymer chips with capacitively coupled contactless conductivitydetection for on-site analysis of foodstuff

机译：便携式集成毛细管 - 电泳系统，采用一次性聚合物芯片，具有电容耦合的非接触式电导率，用于现场分析食品

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摘要

We present a compact portable chip-based capillary electrophoresis system that employs capacitively coupled contactless conductivity detection (C~4D) operating at 4 MHz as an alternative detection method compared to the commonly used optical detection based on laser-induced fluorescence. Emphasis was put on system integration and industrial manufacturing technologies for the system. Therefore, the disposable chip for this system is fabricated out of PMMA using injection molding; the electrodes are screen-printed or thin-film electrodes. The system is designed for the measurement of small ionic species like Li~+, Na~+, K~+, SO_4~(2-) or NO_3~- typically present in foods like milk and mineral water as well as acids e.g. in wine.
机译：我们提出了一种紧凑的便携式芯片基毛细管电泳系统，其采用电容耦合的接触式电导检测（C〜4D），其与基于激光诱导的荧光的常用的光学检测相比，以4MHz为替代检测方法。强调系统的系统集成和工业制造技术。因此，使用注塑成型，由PMMA制造出该系统的一次性芯片;电极是丝网印刷或薄膜电极。该系统专为测量小离子物质，如Li〜+，Na〜+，K〜+，SO_4〜（2-）或NO_3〜 - 通常存在于牛奶和矿泉水以及酸等食物中。在葡萄酒中。

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