水中阳离子表面活性剂的传感器及制备方法

Sensor for aquatic cationics and producing method thereof

Abstract

本发明提供一种测定水中阳离子表面活性剂的传感器,由聚四氟乙烯外套管,石墨内套管,Ag/AgCl内参比电极整体构成,活性膜涂于石墨管内壁,内外套管之间封装有内参比溶液,Ag/AgCl内参比电极封装于内外套管之间的溶液之内;内套管与测试导管连通,其特征在于:在内外套管径向设置进样管,试样由进样管进入,经导管两端流过。本发明的三通管状流通式活性膜传感器在实际应用中,水样进入传感器时其方向与活性膜垂直,水样冲击活性膜从而有效避免了一般流通式电极有时对待测物质无响应情况的发生。具有制作过程简单,与水样接触面积大,灵敏度高等优点,测试过程快速、简单。
The invention provides a sensor to measure surface active agent of water positive ions, which is composed of teflon outer sleeve, graphite inner sleeve and Ag/AgCl internal reference electrode. Active film is coated on inwall of graphite pipe. Internal reference solution is packaged between outer and inner sleeves and Ag/AgCl internal reference electrode is packaged in the solution. The inner sleeve connects with testing conductor pipe. It is characterized in that: set radial sampling pipe in inner sleeve. Samples enter from sampling pipe and flow through both ends of conductor pipe. In application of this T-branch flow active film sensor, the entry direction of water sample is vertical to active film. Water sample impacting active film avoids the situation that currently flow-electrode having on response to the tested substance. It has simple producing process, large contact area with water sample and high sensitivity. The testing process is quick and simple.

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    CN-102262109-ANovember 30, 2011中国科学院理化技术研究所基于烷基终端电极的电化学检测溶液中阳离子表面活性剂的方法