Solid Contact Ion‐selective Electrodes on Printed Circuit Board with Membrane Displacement
Solid Contact Ion‐selective Electrodes on Printed Circuit Board with Membrane Displacement
复制标题
具有膜位移的印刷电路板上的固体接触离子选择性电极
DOI：
10.1002/elan.202100686
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发表时间：
2022
期刊：
影响因子：
3
通讯作者：
Papautsky, Ian
中科院分区：
文献类型：
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作者：
Zhang, Zhehao;Papautsky, Ian
使用印刷电路板（PCB）和介孔炭黑（MCB）作为离子-电子转换器（固体接触）来制造多路固体接触离子选择性电极（SCISE）。四个传感器配置进行了检查，并表明，除了MCB，传感器配置的电位响应的稳定性起着至关重要的作用。增强的传感器稳定性也与水的跨膜通量的抑制有关。传感器表现出近能斯特灵敏度（K+ ISE为58.1 mV/dec，NO3-ISE为−55.1 mV/dec），低检测限（1.5-2.2 μM）和良好的短期稳定性（≤ 0.1 mV/min）。 传感器可干燥储存，无需预处理即可使用。这项工作展示了一种很有前途的方法，可以将PCB技术和炭黑结合起来，大规模生产低成本的ISE，用于现场测试，可穿戴设备或现场测量。
Multiplexed solid‐contact ion‐selective electrodes (SCISEs) are fabricated using printed circuit board (PCB) and mesoporous carbon black (MCB) as ion‐to‐electron transducer (solid contact). Four sensor configurations were examined and showed that in addition to MCB, the sensor configuration plays crucial role in the stability of the potential response. The enhanced sensor stability was also linked with suppression of transmembrane flux of water. The sensors exhibited near‐Nernstian sensitivity (58.1 mV/dec for K+ISEs and −55.1 mV/dec for NO3‐ISEs), low detection limits (1.5–2.2 μM), and good short‐term stability (∼0.1 mV/min). Sensors can be stored dry and used without preconditioning. This work demonstrates a promising approach to combining PCB technology and carbon black for large‐scale production of low cost ISEs for point‐of‐care testing, wearables, orin situfield measurements.