Phosphate Sensor Using Molybdenum
Phosphate Sensor Using Molybdenum
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DOI：
10.1149/2.0161609jes
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发表时间：
2016-01-01
影响因子：
3.9
通讯作者：
Yang, Huizhong
中科院分区：
文献类型：
--
作者：
Li, Yinhua;Jiang, Taoqing;Yang, Huizhong
基于钼与磷酸氢根离子（HPO_（42-））在碱性条件下的反应，研制了钼基磷酸根离子选择电极。我们发现电极显示出近似能斯特特性，斜率为-26.9 +/-0.5 mV/decade。在pH8.5条件下，线性范围为10（-1）M ~ 10（-5）M，检出限为1.9 × 10（-6）M。对HPO_（42-）离子的响应时间短，表明了其快速响应特性。伊势可以使用三个月以上，具有良好的重现性和选择性。伊势的制造过程简单且廉价。该方法可用于水中磷酸盐的定量分析。(C)2016年电化学学会。All rights reserved.
Aphosphate ion-selective electrode (ISE) based on molybdenum was developed, which is based on the reaction between molybdenum and hydrogen phosphate ions (HPO42-) in alkaline condition. We found that the electrode showed a near Nernst characteristics with a slope of -26.9 +/- 0.5 mV/decade. Potential linear range is from 10(-1) M to 10(-5) M and detection limit is 1.9 x 10(-6) M in the pH of 8.5. The short response time for HPO42- ions indicates its fast response characteristic. The ISE can be used over a period of three months with good reproducibility and selectivity. The manufacture process of the ISE is easy and inexpensive. It can be applied to quantitative analysis of phosphate in water. (C) 2016 The Electrochemical Society. All rights reserved.