Method for measuring calcium element in steel by ICP-OES

Abstract

The invention provides a method for measuring a calcium element in steel by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer). The method comprises the following steps: 1 taking a test sample; 2 preparing a sample solution; 3 preparing a working curve solution; 4 controlling the sample according to the content range of to-be-detected elements; 5 establishing a working curve; 6 calculating the content of related elements in the sample according to the working curve; 7 determining the analysis spectral line interference of each element to be detected and deducting the background; 8 drawing a working curve; and 9 measuring the content of the calcium element in the sample solution: taking the average value of the measured values of the sample solution on the two working curves. According to the method disclosed by the invention, experimental data show that the recovery rate is 95 to 110%; precision detection data show that the RSD of the method is 10%, and the detection requirement is met. Interference is eliminated, the test process is optimized, the problem that a sample is not completely dissolved is solved through new dissolving acid, the accuracy of test data is further improved, and efficient and accurate data can be provided for scientific research and enterprise production.

Description

technical field [0001] The invention belongs to the technical field of chemical substance analysis methods, and in particular relates to an ICP-OES method for measuring calcium elements in steel. Background technique [0002] The determination methods of calcium element in the prior art include: chemical wet method, direct reading spectrometry, atomic absorption method, etc.; among them, chemical wet method and atomic absorption method occupy the dominant position. The detection values ​​of chemical wet method and atomic absorption method are relatively stable and accurate, but this method has the following disadvantages: the operation steps are cumbersome, difficult to control, more chemical reagents are used, the time required for sample analysis is long, the cost is high, and mass detection cannot be realized , affecting the production inspection cycle, making the inspection data not fast and convenient enough. Contents of the invention [0003] The purpose of the pres...

AI Technical Summary

Problems solved by technology

The detection values ​​of chemical wet method and atomic absorption method are relatively stable and accurate, but this method has the following disadvantages: the operation steps are cumbersome, difficult to control, more chemical reagents are used, the time required for sample analysis is long, the cost is high, and mass detection cannot be realized , affecting the production inspection cycle, making the inspection data not fast and convenient enough

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