Perovskite‐Type Oxide‐Based Electrode: A New Sensor for Hydrogen‐Phosphate Ion

摘要: A perovskite-type oxide-based electrode showed good properties of amperometric sensing to hydrogen-phosphate ion. The anodic current carbon-based electrodes loaded with La-Co-based oxide, the signal, increased increasing concentration ion at +0.85 + 1.0 V vs. a saturated calomel electrode. carbon La 0.9 Ce 0.1 CoO 3 remarkable selectivity HPO 4 2- among examined anions F - , Cl Br SCN NO SO CO and ClO . although it received serious interference from I use thin film oxide drastically improved ion, LaCoO sensor device responded 2 concentrations between x 10 -6 1 M, 90% response time was as short ca. 5 min or s low high range respectively. highest anions.