Potentiometric Strip Cell Based on Carbon Nanotubes as Transducer Layer: Toward Low-Cost Decentralized Measurements

被引：91

作者：

Xavier Rius-Ruiz, F. ^{[1
]}

Crespo, Gaston A. ^{[1
]}

Bejarano-Nosas, Diego ^{[1
]}

Blondeau, Pascal ^{[1
]}

Riu, Jordi ^{[1
]}

Xavier Rius, F. ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Tarragona 43007, Spain

来源：

ANALYTICAL CHEMISTRY | 2011年 / 83卷 / 22期

关键词：

ION-SELECTIVE ELECTRODES; SOLID-CONTACT; CONDUCTING POLYMERS; MEMBRANES; SENSOR;

D O I：

10.1021/ac202070r

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, we developed a potentiometric planar strip cell based on single-walled carbon nanotubes that aims to exploit the attributes of solid-contact ion-selective electrodes for decentralized measurements. That is, the ion-selective and reference electrodes have been simultaneously miniaturized onto a plastic planar substrate by screen-printing and drop-casting techniques, obtaining disposable strip cells with satisfactory performance characteristics (i.e., the sensitivity is 57.4 +/- 1.3 mV/dec, the response time is <= 30 s within the linear range from log alpha(K+) = -5 to -2, and the limit of detection is -6.5), no need of maintenance during long dry storage, quick signal stabilization, and light insensitivity in short-term measurements. We also show how the new potentiometric strip cell makes it possible to perform decentralized and rapid determinations of ions in real samples, such as saliva or beverages.

引用

页码：8810 / 8815

页数：6

共 38 条

[11] Transduction Mechanism of Carbon Nanotubes in Solid-Contact Ion-Selective Electrodes [J].