Method for measuring content of calcium in feed by utilizing ion-selective electrode

Abstract

The invention relates to a method for measuring the content of calcium in a feed by utilizing an ion-selective electrode. The method comprises the steps: preparing a standard solution, determining thepotential value of the standard solution, generating a standard curve and a function, preparing a to-be-detected sample solution, detecting the potential value of the to-be-detected solution, extracting calcium ions in the sample solution, detecting the potential value of the extracted sample solution to judge the quantity of interfering ions, calculating the content of calcium ions in the solution and calculating the content of calcium in the sample. A numerical matrix of blank potential value and a compensation parameter calculating parameter matrix of the blank potential value to measuredpotential value are set in a central control system. Blank detection is carried out before a standard solution is detected, the measured potential value is compensated according to the detection result, the blank influence is removed, and the detection accuracy is improved; and calcium ions in the solution are extracted from the to-be-detected sample, the potential value of the extracted sample solution is detected, influences of the potential value and substances in the sample solution are removed, and the detection accuracy is further improved.

Description

technical field [0001] The invention relates to the technical field of ion detection, in particular to a method for measuring calcium content in feed by using an ion selective electrode. Background technique [0002] Calcium is the most abundant inorganic salt in animals, and enjoys the title of "life element". Calcium in animals, on the one hand, constitutes bones and teeth, and on the other hand, it can participate in various physiological functions and metabolic processes, and affect various organs organized activities. Excessive intake of calcium will affect the absorption rate of other essential minerals such as iron and zinc, and may cause related diseases. Calcium deficiency will cause physiological disorders in animals, and then lead to a series of serious diseases. Animals mainly obtain them through feed Therefore, fast and accurate determination of calcium content in feed and raw materials is very important for feed enterprises. [0003] The methods currently use...

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Problems solved by technology

[0005] For this reason, the present invention provides a kind of method that utilizes ion-selective electrode to measure the calcium content in the feed, in order to overcome the problem that the steps of the calcium ion detection process in the prior art are complicated and time-consuming

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