Calcium ion selective membrane and preparation method thereof

A technology for selecting membranes and calcium ions, applied in the field of blood gas biochemical sensors, to achieve the effects of high flatness, good thickness uniformity and short production cycle

Inactive Publication Date: 2016-02-17
吴国清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems existing in the existing calcium ion selective membrane, the present invention provides a calcium ion selective membrane for a calcium ion selective electrode and a preparation method thereof

Method used

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  • Calcium ion selective membrane and preparation method thereof

Examples

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example 1

[0015] Example 1, two methods were used to prepare calcium ion selective membranes, and their performances were compared.

[0016] Method 1: Dissolve 0.1g butyl methacrylate, 0.2g dioctyl adipate, 0.006g ETH1001, 0.001g sodium tetraphenylborate, 0.005g surfactant H212 in ethyl acetate under ambient temperature fume hood After the above solution was left to stand for 30 minutes, it was coated, and the coating thickness was set to 300 μm. After drying for 30 minutes, a calcium ion selective membrane with a film thickness of 10 μm was obtained.

[0017] Method 2: Dissolve 0.1g methyl methacrylate, 0.1g o-nitrophenoctyl ether, 0.005g cathimycin, 0.002g sodium tetraphenylborate, and 0.005g surfactant in acetic acid under an ambient temperature fume hood In ethyl ester, the above solution was left to stand for 30 minutes before coating, and the coating thickness was set to 300 μm. After drying for 30 minutes, a calcium ion selective membrane with a film thickness of 15 μm was obtain...

example 2

[0020] Example 2, using the above method 2 to prepare a calcium ion selective membrane, test its response potential to the standard solution (calcium ion concentration 0.49mmol / L) within 90 days, the test results are as follows figure 1 shown.

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Abstract

The invention relates to a calcium ion selective membrane and a preparation method thereof, and belongs to the technical field of blood gas biochemical sensors. The calcium ion selective membrane is used for detecting the concentration of calcium ions in body fluid. The calcium ion selective membrane comprises a macromolecule binding agent, an ion carrier, a carrier solvent, an anion interference agent and a surface active agent. The macromolecule binding agent, the ion carrier, the carrier solvent, the anion interference agent and the surface active agent are dissolved in an ethyl acetate solution, and coating and drying are performed to obtain the calcium ion selective membrane. The prepared calcium ion selective membrane overcomes the defects that the carrier solvent of a traditional ion selective membrane leaks and the strength of the membrane is not high. The prepared calcium ion selective membrane is high in strength, good in tenacity, high in measurement precision, good in long-term stability and low in lower detection limit, the preparation method is simple, the production period is short, the production cost is low, and the calcium ion selective membrane is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of blood gas biochemical sensors, in particular to a calcium ion selective membrane, the core part of a calcium ion selective electrode, and a preparation method thereof. Background technique [0002] Calcium is one of the essential elements for the life activities of the body, and it contains about 1kg in the adult body. Calcium ion is the most abundant cation in the blood, and it is a physiologically active substance. It is of great significance to detect the concentration of calcium ion in the research of physiological functions and clinical diagnosis of some diseases related to calcium metabolism. [0003] The calcium ion selective electrode can measure the calcium ion concentration in the blood. The test principle is that the calcium ion selective membrane has a specific response to different concentrations of calcium ions, and the calcium ion concentration in the blood is calculated by measuring the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/333
CPCG01N27/3335
Inventor 吴国清向东东邱谍陈汉杰
Owner 吴国清
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