A Study Focusing on the Preparation and Application of New-mode Electrode Materials for Water Hardness Measurement

Abstract

This paper aimed to study the calcium ion selective electrode, based on using PVC as the electrode carrier and didecyl calcium phosphate which was synthesized from decanol, phosphorus oxytrichloride, pyridine and calcium chloride as the electroactive substance. This paper mainly focused on the study and the fabrication process of both the electrode diaphragm and electrode, with conducting the performance test of the newly developed electrode. The results showed that the response time of the developed water hardness sensor was 2-5 s, which had good response characteristics and was suitable for fast and portable testing of water hardness in environmental testing. There was no significant difference between this water hardness sensor method and the national standard method. When the water temperature varies between 10 and 60 Centigrade, the influence of temperature on the data of the water hardness sensor was very small, and the water hardness sensor had good stability to test the temperature change.