Induction film used for calcium ion-selective electrode, production method and application thereof

Abstract

The invention relates to the technical field of an induction film used for a calcium ion-selective electrode, a production method and application thereof. The method comprises the following steps: taking polymer, plasticizer, ion selective carrier and fat soluble salt as solute, and uniformly mixing the solute with solvent and stirring for 12 hours at normal temperature, wherein the total content of the solute is 150-400mg / ml; and then volatilizing for 72 hours to prepare the induction film with thickness of about 0.5mm, wherein the polymer is one or more of carboxyl polyvinyl chloride, polyvinyl chloride with high molecular weight or polyurethane, the plasticizer is one or two of bis(2-ethylhexyl) sebacate and o-nitrophenyl octyl ether, the ion selective carrier is laurate, the fat soluble salt is potassium tetra-(4-chlorphenyl) boric acid, and the solvent is tetrahydrofuran or a mixture of the tetrahydrofuran and acetone.

Description

technical field [0001] The patent of the present invention relates to a calcium ion selective electrode sensing membrane, a production method and its application. Background technique [0002] The development of modern medicine, especially the rescue of clinically critically ill patients, requires the detection of electrolytes in the human body, and calcium ions are one of the important detection items. Calcium is associated with growth and bone development in the body, and also plays an important role in blood clotting. And maintaining normal concentration of calcium (ion) content in serum can maintain normal heart and blood vessel health. Calcium plays a pivotal role in intracellular and intercellular communication, so the concentration of calcium ions in each cell must be strictly controlled. In the muscle cells, it is more special. In addition to the storage method, calcium is also very important for the initiation of muscle contraction. Others, such as lipid metaboli...

AI Technical Summary

Problems solved by technology

This method needs to drop the membrane solution several times (10-15 times), and drop it again after the membrane solution is fully volatilized each time, which is time-consuming, laborious and harmful

And directly drop into the electrode chamber, most or all of the solute of the membrane solution is tetrahydrofuran, which can corrode all plastic products. Some additives in the plexiglass material in the electrode cavity will dissolve into the membrane solution, such as silicon-containing fillers, will Destroy the sensing membrane to adsorb calcium ions and affect the performance of the sensing membrane