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

An ion-selective electrode and ion-sensitive membrane technology, which is applied in the direction of material analysis, measuring device, and instrument by electromagnetic means, can solve the problems of long activation time of ion-sensitive membrane, affecting the efficiency of medical diagnosis, etc., so as to improve the efficiency of medical diagnosis, The effect of reducing activation time

Active Publication Date: 2018-09-28
SHANDONG EXCELLENCE BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 in

Method used

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

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preparation example Construction

[0026] According to another aspect of the present invention, there is also provided a method for preparing a sensitive membrane of an ion-selective electrode, which includes the following steps: dissolving an ionophore, a high molecular polymer, a plasticizer and an ion additive in an organic solvent to obtain a predetermined mixed solution; adding the electrolyte solution corresponding to the ion to be measured into the premixed solution to form a sensitive membrane solution; spreading and drying the sensitive membrane solution to obtain an ion selective electrode sensitive membrane.

[0027] In the actual application process, the sensitive membrane solution can be dropped on the surface of AgCl or the surface of the solid electrolyte layer, and the ion selective electrode sensitive membrane can be obtained after the solvent volatilizes; Select the corresponding position of the electrode, and after the solvent volatilizes, the sensitive film of the traditional ion-selective el...

Embodiment 1

[0033] In parts by weight, the ion-selective electrode sensitive membrane includes 3 parts of ionophore 4-tert-butylcalix [4] arene-tetraethyl tetraacetate, 32 parts of polymer polyvinyl chloride (sigma 81392), 64 parts Plasticizer bis(2-ethylhexyl) sebacate and 1 part of ionic additive tetrakis(4-chlorophenyl)potassium borate, and the molar ratio between ionophore and electrolyte sodium chloride is 2:1 .

Embodiment 2

[0035] The formula is the same as in Example 1, except that the molar ratio between the ionophore and the electrolyte is 1:1.

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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...

Claims

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Application Information

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IPC IPC(8): G01N27/333
CPCG01N27/3335
Inventor 王鹏张国联
Owner SHANDONG EXCELLENCE BIOTECHNOLOGY CO LTD
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