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Sensitivity-Tunable and Disposable Ion-Sensing Platform Based on Reverse Electrodialysis.
Analytical Chemistry ( IF 7.4 ) Pub Date : 2020-03-19 , DOI: 10.1021/acs.analchem.0c00142
Jihun Rho 1 , Song Yi Yeon 1 , Taek Dong Chung 1, 2
Affiliation  

The detection of ions is of critical importance for environmental, industrial, and physiological applications, where sensitive and disposable ion sensing is still challenging. Herein, we present a sensitivity-tunable ion-sensing platform based on reverse electrodialysis, which is suitable for convenient and sensitive on-site analysis of various ions. It is revealed that this sensing system does not require any external power supply, and the sensitivities can be modulated by altering the number of stacks, possibly higher than the theoretical limitation, the Nernstian slope. The sensing system is integrated with a multicolor detection system via the introduction of polyaniline as a reporting material, which enables direct quantitative analysis based on a continuous color change gradient observable with the naked eye. Overall, the adopted approach by introducing reverse electrodialysis represents remarkable progress toward self-powered and disposable ion sensors with high and easily tunable potentiometric sensitivity.

中文翻译:

基于反向电渗析的灵敏度可调和一次性离子传感平台。

离子的检测对于环境,工业和生理应用至关重要,在这些应用中,灵敏和一次性离子感测仍然具有挑战性。在此,我们提出了一种基于反向电渗析的灵敏度可调的离子传感平台,适用于各种离子的方便,灵敏的现场分析。结果表明,该传感系统不需要任何外部电源,并且可以通过更改堆栈数量(可能高于理论极限Nernstian斜率)来调节灵敏度。通过引入聚苯胺作为报告材料,该传感系统与多色检测系统集成在一起,从而可以基于肉眼可观察到的连续颜色变化梯度进行直接定量分析。总体,
更新日期:2020-03-19
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