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Liquid Membrane Ion Selective Electrode

An ion-selective, liquid-membrane technology that is applied in the direction of material analysis, instruments, and measuring devices through electromagnetic means, and can solve problems such as the inability to prevent changes in the internal electrode potential

Active Publication Date: 2017-04-12
HORIBA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, even if the cover is provided, since the package with the cover needs to be opened during analysis, the potential change of the internal electrodes due to ultraviolet rays during analysis cannot be prevented.

Method used

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  • Liquid Membrane Ion Selective Electrode
  • Liquid Membrane Ion Selective Electrode
  • Liquid Membrane Ion Selective Electrode

Examples

Experimental program
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Effect test

Embodiment

[0050] The present invention will be described in more detail below with examples, but the present invention is not limited to these examples.

[0051] The liquid film type Na as the embodiment ＋ / K ＋ Electrodes (composite type), five products of the present invention in which isoindolinone yellow (manufactured by Dainichi Seika Co., Ltd., DA4446) was prepared in the sodium ion sensitive membrane and potassium ion sensitive membrane, and five A comparative example having the same specifications as the product of the present invention except that isoindolinone yellow is not added.

[0052] For the obtained liquid film Na ＋ / K ＋ Electrodes, in the outdoors exposed to sunlight, under direct sunlight (61kLux) or shaded state, drop CaCl containing sodium ions and potassium ions on each ion-sensitive membrane 2 aqueous solution and measure the resulting potential. The results are shown in Table 1 and Table 2. In addition, the standard value is 0±3mV.

[0053] Table 1

[0054...

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PUM

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Abstract

This invention relates to a liquid membrane type ion-selective electrode that can restrain an electric potential fluctuation of an inner electrode due to the ultraviolet rays and that can conduct an analysis with high accuracy The liquid membrane type ion-selective electrode comprises a liquid membrane type ion-sensitive membrane 15, 16 wherein a predetermined ionophore is supported by a base material, an inner electrode 26, 27 that has electrical conductivity and that is arranged at a position on which the light that has transmitted the ion-sensitive membrane 15, 16 is incident, an internal solution 14a, 14b that contains an electrolyte and that makes contact with the ion-sensitive membrane15, 16 and the inner electrode 26, 27, wherein the ion-sensitive membrane15, 16 contains an ultraviolet absorber or an ultraviolet reflecting agent having an insulation property

Description

technical field [0001] This invention relates to a liquid film type ion selective electrode including a liquid film type ion sensitive membrane formed by supporting an ion carrier. Background technique [0002] Various ionophores (ion-selective ligands) known in the past that can selectively capture specific ions have been used to develop a liquid-membrane ion-selective electrode including a liquid-membrane ion-sensing membrane formed by carrying ionophores (Patent Document 1). This liquid-membrane-type ion-selective electrode can use various ions as analysis objects by changing ion carriers according to target ions. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-33333 [0005] Patent Document 2: Japanese Patent Laid-Open Publication No. Sho 63-138255 [0006] Patent Document 3: Japanese Patent Laid-Open Publication No. 2005-308720 [0007] Resins such as polyvinyl chloride and transparent silicone rubber are gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/333
CPCG01N27/333
Inventor 岩本惠和
Owner HORIBA LTD