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This document outlines general requirements, criteria and fundamental operation procedure governing spark discharge atomic emission spectrometric analysis for steel.
In the steel industry, determining the chemical composition of steel, especially liquid steel, is crucial. The proposed procedure, spark discharge atomic emission spectrometric analysis (Spark-AES), is suitable for process control and inspection testing in there. Compared with the conventional chemical analysis, it requires less time for sample treatment and measurement, and does not use hazardous chemicals. With a small solid sample, a spark emission spectrometer provides spectral data of a wide range of wavelengths within 10 seconds. The emission spectra obtained by a single set of excitation contain signals from multiple elements. Therefore, it is possible to determine elements simultaneously. Additionally, a spark source has relatively high stability and low background noise. However, there are no ISO standards specifying Spark-AES for determining the chemical composition of steel. The proposed method specifies common and fundamental provisions, e.g., operating conditions of the spectrometer, measurement procedures, and the chemical analysis of steel using Spark-AES.
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