Potentiometric Phosphate Ion Sensor Based on Electrochemical Modified Tungsten Electrode
Kebin Xu, Ying Li, Min Li
Abstract
M from pH 9 to pH 10. It has good selectivity to other common anions. The long-term monitoring experiment showed that the potential fluctuation was less than ±3 mV in 24 h. Compared to conventional determination methods, the current phosphate ion sensor showed a close value in a real sample. The mechanism of phosphate ion response was investigated in detail. This sensor possesses advantages of simple manufacture, low cost, a wide pH range for detecting, and good selectivity.
Topics & Concepts
Potentiometric titrationTungstenElectrodePhosphoric acidInorganic chemistryAqueous solutionReference electrodePhosphateChemistryElectrochemistryIon selective electrodePotentiometric sensorIonSelectivityGlass electrodepH meterMaterials scienceCatalysisOrganic chemistryPhysical chemistryAnalytical Chemistry and SensorsElectrochemical Analysis and ApplicationsElectrochemical sensors and biosensors