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Preparation of PAAm/PVA Hydrogel and Its Application in the Reference Electrodes for Ocean Online Monitoring Sensors

XU Rui;WANG Si-zhe;DUAN Yan-wen;College of Chemistry and Molecular Sciences,Wuhan University;  
Online monitoring and analysis of marine biochemical information has been in high demand in marine engineering,therefore it urgently needs to develop an electrochemical reference electrode that is robust and stable in long period of electrochemical detection.In this work,the different proportions of PAAm/PVA crosslinked hydrogels were prepared through orthogonal experimental design.The optimum hydrogel was selected and assembled into the electrode and the stability of the electrode potential was studied.The results show that the electrodes have good potential stability in simulated seawater,suggesting that PAAm/PVA hydrogel can act as electrolyte and be applied to the robust reference electrodes in marine online monitoring.
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