A poly(dimethylsiloxane)-based electrochemical cell coupled with disposable screen printed edge band ultramicroelectrodes for use in flow injection analysis
A poly(dimethylsiloxane)-based electrochemical cell coupled with disposable screen printed edge band ultramicroelectrodes for use in flow injection analysis
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DOI：
10.1016/j.elecom.2007.09.014
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发表时间：
2007-12-01
影响因子：
5.4
通讯作者：
Zen, Jyh-Myng
中科院分区：
文献类型：
--
作者：
Chang, Jen-Lin;Zen, Jyh-Myng
我们在这里报告了一种廉价的聚（二甲基硅氧烷）（PDMS）为基础的电化学电池专门设计的一次性丝网印刷边带超微电极（SPUME）用于流动注射分析（FIA）的发展。SPUME在非导电聚丙烯基板上采用内置三电极图案制造。绝缘层之间的碳和/或金属夹膜的边缘可以用作带型超微电极。电池的制造是简单的;不包括微机械操作。通过简单地将PDMS成型为具有“T”型通道以将SPUME固定在受限壁喷射型配置中，通过使用Fe（CN）（6）（3-）/Fe（CN）（6）（4-）氧化还原电对来评估所提出的电池的性能特性。溶液的高速喷射导致传质系数高达约100。0.48 cm/s。建议的流动注射系统应用于检测亚硝酸根和电流响应是线性高达700 μ M，检测限为0.067 μ M（S/N = 3）。最后成功地实现了不加支持电解质测定湖泊和地下沃茨中亚硝酸盐。(C)2007 Elsevier B. V.保留所有权利。
We report here the development of an inexpensive poly(dimethylsiloxane) (PDMS)-based electrochemical cell specifically designed for disposable screen printed edge band ultramicroclectrodes (SPUMEs) for use in flow injection analysis (FIA). The SPUME is fabricated with a built-in three-electrode pattern on a non-conducting polypropylene substrate. The edge of the carbon and/or metal-sandwiched films between the insulator layers can serve as a band type ultramicroelectrode. Fabrication of the cell is straightforward; no micromechanical operation is included. Simply by molding of PDMS with a "T" type channel to fix the SPUME in a confined wall-jet-type configuration, the performance characteristic of the proposed cell was evaluated by using the Fe(CN)(6)(3-)/Fe(CN)(6)(4-) redox couple. The high velocity jet of solution resulted in a mass transport coefficient up to ca. 0.48 cm/s. The proposed FIA system was applied for the detection of nitrite and the current response was linear up to 700 mu M with a detection limit of 0.067 mu M (S/N = 3). Finally the determination of nitrite in lake and ground waters without the addition of supporting electrolyte was successfully demonstrated. (C) 2007 Elsevier B.V. All rights reserved.