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A kind of preparation method of iodine three ion selective electrode

An iodide triion and selective technology, applied in the field of electrodes, can solve problems such as starch instability, limited use, and reduced accuracy of test results, and achieve good potential response, good stability and reproducibility.

Inactive Publication Date: 2019-01-29
SUZHOU UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

However, starch has many disadvantages as an indicator in visual titration, such as: it is not easy to indicate the end point in colored solution, the instability of starch in cold water, and the formation of insoluble matter with iodine, which will affect the low concentration solution. End point judgment, reducing the accuracy of test results
The platinum electrode is used as the indicator electrode for iodometric potentiometric titration, which has low sensitivity and is limited in use in low-concentration samples

Method used

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  • A kind of preparation method of iodine three ion selective electrode
  • A kind of preparation method of iodine three ion selective electrode
  • A kind of preparation method of iodine three ion selective electrode

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[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The embodiment of the present invention provides a kind of preparation of iodine three ion selective electrode, and it uses diamine trisalicylaldehyde as neutral carrier, and its preparation method comprises the following steps:

[0027] 1) Preparation of diamine trisalicylaldehyde:

[0028] Dissolve salicylaldehyde in absolute ethanol at room temperature,...

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Abstract

The invention discloses a method for preparing a triiodide ion specific electrode. The method comprises the following steps: preparing diamine tri-salicylaldehyde as a neutral carrier, then neutral carrier, a plasticizer and PVC powder are dissolved in tetrahydrofuran to prepare a PVC membrane, and then the triiodide ion specific electrode is prepared. The triiodide ion specific electrode prepared by the preparation method has good potential response to triiodide ion, accords with nernst response in a wide concentration scope, and the selectivity electrode has good stability and reappearance.

Description

technical field [0001] The invention relates to the field of electrodes, in particular to a preparation method of an iodine triion selective electrode. Background technique [0002] In chemical and pharmaceutical analysis, iodometric method is the simplest, fastest and most accurate analysis method, and starch indicator or platinum electrode is generally used as the indicator electrode for the end point judgment of iodometric method. However, starch has many disadvantages as an indicator in visual titration, such as: it is not easy to indicate the end point in colored solution, the instability of starch in cold water, and the formation of insoluble matter with iodine, which will affect the low concentration solution. End point judgment reduces the accuracy of test results. The platinum electrode is used as the indicator electrode for iodometric potentiometric titration, which has low sensitivity and is limited in use in low concentration samples. [0003] Iodide triion mai...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/333
CPCG01N27/3335
Inventor 董淑玲王秀玲尹吉同
Owner SUZHOU UNIV OF SCI & TECH