摘要
为研究基于钼的磷酸根离子选择电极测量原理,探究电极表面钼的价态和不同氢氧根离子(OH-)浓度对磷酸盐检测体系的影响,采用循环伏安法对钼电极检测磷酸盐时的表面反应机理进行定性研究分析,同时利用能谱法进行定量分析。研究结果显示,检测磷酸盐时钼电极表面反应的产物为三氧化钼(MoO 3);碱性环境是形成MoO 3并最终基于钼的磷酸根离子选择电极能够检测磷酸盐的必要条件。
In order to study the measurement principle of the phosphate ion selective electrode based on molybdenum,the influence of molybdenum valence state and different hydroxide ions(OH-)concentration on the phosphate detection system was studied,the surface reaction mechanism of the detection of phosphate by molybdenum electrode was qualitatively analyzed by cyclic voltammetry,and the energy spectrum method was used for quantitative analysis.The results show that molybdenum trioxide(MoO 3)is the product of the surface reaction of molybdenum electrode in the detection of phosphate.Alkaline environment is the necessary condition for the formation of MoO 3 and the final realization of phosphate ion selective electrode based on molybdenum for phosphate detection.
作者
骆芳萍
杨慧中
LUO Fang-ping;YANG Hui-zhong(School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China;Key Laboratory of Advanced Control of Light Industry Process,Ministry of Education,Jiangnan University,Wuxi 214122,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2020年第6期1-6,11,共7页
Instrument Technique and Sensor
基金
国家自然科学基金项目(61773181)
中央高校基本科研业务费专项资金资助项目(JUSRP51733B)。
关键词
磷酸根离子选择电极
循环伏安法
X射线光电子能谱分析
钼电极
phosphate ion selective electrode
cyclic voltammetry
X-ray photoelectron spectroscopy
molybdenum electrode