Ion selective electrode sensitive membrane, preparation method thereof and ion selective electrode comprising ion selective electrode sensitive membrane

Abstract

The invention provides an ion selective electrode sensitive membrane, a preparation method thereof and an ion selective electrode comprising the ion selective electrode sensitive membrane. The ion selective electrode sensitive membrane comprises an ion carrier, a high-molecular polymer, a plasticizer, an ion additive, and an electrolyte corresponding to to-be-measured ion. In the above ion selective electrode sensitive membrane, besides the ion carrier, the high-molecular polymer, the plasticizer, and the ion additive, the ion selective electrode sensitive membrane also contains the electrolyte corresponding to the to-be-measured ion, and the electrolyte corresponding to the to-be-measured ion is introduced into a body of the ion selective electrode sensitive membrane in advance. The ion selective electrode sensitive membrane is immersed to a solution containing to-be-detected ion, potential in the sensitive membrane can rapidly achieve a stable state, so that the activation time of the sensitive membrane is effectively reduced, and the sensitive membrane is in favor of increasing the medical diagnosis efficiency.

Description

technical field [0001] The invention relates to the technical field of ion selective electrodes, in particular to an ion selective electrode sensitive membrane, a preparation method thereof and an ion selective electrode comprising the same. Background technique [0002] Ion-selective electrodes can detect the ion concentration in liquid samples, and are widely used in clinical testing, environmental monitoring, food safety and other fields, and their core components are ion-sensitive membranes. Before the ion-selective electrode is used, it generally needs to be activated, that is, soaked in the solution containing the detected ion. The immersion time prolongs with the increase of ion-sensitive membrane thickness and density. For example, a potassium electrode with a film thickness of 0.5-1 mm and an inner filling solution needs to be soaked in KCL solution for 1 hour or longer to achieve stability. In daily work, especially in clinical diagnosis, such a long electrode ac...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a sensitive membrane for an ion-selective electrode, its preparation method and an ion-selective electrode including it, so as to solve the problem that the activation time of the ion-sensitive membrane in the prior art is too long, which affects the efficiency of medical diagnosis

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