A dual-electrode flow sensor fabricated using track-etched microporous membranes
A dual-electrode flow sensor fabricated using track-etched microporous membranes
复制标题
使用径迹蚀刻微孔膜制造的双电极流量传感器
DOI：
10.1016/j.talanta.2012.02.001
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Junichi Shida
中科院分区：
文献类型：
--
作者：
Hitoshi Mizuguchi;Kanako Shibuya;Azumi Fuse;Tomoko Hamada;Masamitsu Iiyama;Kazuhiro Tachibana;Tatsuo Nishina;Junichi Shida
将厚度为7-10μm的微孔膜电极叠置在一起，制成了一种新型的双电极流量传感器。通过将铂溅射到膜过滤器的两侧上来制备电极，所述膜过滤器包含光滑的平坦表面以及具有均匀直径的圆柱形孔。当样品溶液流过膜电极时进行电解，并且在第一工作电极上产生的分析物被瞬时输送到位于第一工作电极下游的第二工作电极的表面。在这种情况下，样品溶液肯定会流过膜过滤器的孔。结果，在每个电极处实现了高效电解，并且在宽流速范围内获得了高达100%的收集效率值。在FIA系统中也证实了对样品溶液进样的良好响应。
A new dual-electrode flow sensor has been fabricated by piling the microporous membrane electrodes which have 7–10μm thickness. The electrode was prepared by sputtering of platinum onto both sides of the membrane filter which contain a smooth flat surface as well as cylindrical pores with uniform diameters. The electrolysis is performed when the sample solution flows through the membrane electrode, and a generated analyte on the first working electrode is instantaneously transported to the surface of second working electrode which is located at the downstream of the first one. In this case, the sample solution surely flows through the pores of the membrane filters. As the result, highly efficient electrolysis was achieved at each electrode, and the collection efficiency values as high as 100% were obtained in the wide range of flow rate. Good responses to the injections of sample solutions were also confirmed in the FIA system.