Detection method for measuring content of total aluminum in steel by ICP-AES (inductively coupled plasma-atomic emission spectrometry) method

Abstract

The invention discloses a detection method for determining the content of total aluminum in steel by an ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry) method, belongs to the technical field of inspection, and provides a detection method for determining the content of total aluminum in steel by an ICP-AES method in order to solve the problems that an existing national standard method uses highly toxic chemicals, cannot be completely operated at normal temperature and is long in detection time. Comprising the following steps: treating a sample, selecting a proper wavelength in ICP, drawing a standard curve according to different concentrations and corresponding intensities of an aluminum standard solution, measuring the intensity of the sample, and automatically substituting the intensity into the standard curve to calculate the total aluminum content in the steel. The method changes the original analysis mode, avoids the use of highly toxic chemicals, can be operated at room temperature, simplifies the analysis steps, shortens the analysis period, meets the production requirements, and is suitable for large-scale production requirements.

Description

technical field [0001] The invention relates to a detection method for measuring the total aluminum content in steel by an ICP-AES method, belonging to the technical field of inspection. Background technique [0002] The national standard inspection method for all aluminum in steel is the copper-iron reagent-chrome azure S spectrophotometric method. This method has the following four disadvantages: 1. This method needs to be calculated and measured after the acid-soluble aluminum and residual aluminum are tested separately. The method Complex and long cycle. 2. It needs to go through the steps of sample dissolution - filtration - washing - burning - redissolving - constant volume - separation - color development - colorimetry and other steps. 3. The copper-iron reagent has strict temperature requirements for eliminating interfering elements, and it needs to be completed below 15°C, not at room temperature. 4. 2,4-Dinitrophenol is a highly toxic chemical, which is difficult...

AI Technical Summary

Problems solved by technology

[0002] The national standard inspection method for all aluminum in steel is the copper-iron reagent-chrome azure S spectrophotometry method. This method has the following four shortcomings: 1. This method It is necessary to calculate and measure the acid-soluble aluminum and residual aluminum separately, the method is complicated and the cycle is long

4. 2,4-Dinitrophenol is a highly toxic chemical, which is difficult to purchase and inconvenient to use. Special attention must be paid, and it is not suitable for production inspection requirements

It can be seen that the operation steps of this method are cumbersome, the analysis period is long, and there are still potential safety hazards, so it is not suitable for large-scale production needs

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