https://doi.org/10.15255/KUI.2015.036
Published: Kem. Ind. 65 (7-8) (2016) 349–352
Paper reference number: KUI-36/2015
Paper type: Original scientific paper
Download paper:  PDF

Application of Spectrometric Methods in the Analysis of Metallurgical Samples

A. Štrkalj and Z. Glavaš

Abstract

Instrumental methods of analysis are indispensable in scientific research. They are also being used increasingly in practice to quickly obtain results and better accuracy. Spectrometric methods of analysis have been used for many years in the metallurgical practice. Direct reading optical emission spectrometry is the most commonly used method. However, concentrations of certain alloy in elements in modern metallic materials are very low, often below the limit of detection of the direct reading optical emission spectrometer. In this article, the concentration of boron in ductile iron was determined by direct reading optical emission spectrometry (OES), the inductively coupled plasma optical emission spectrometry (ICP-OES), and graphite furnace atomic absorption spectrometry (AAS-GF). The obtained results showed that the direct reading optical emission spectrometry (OES) and inductively coupled plasma optical emission spectrometry (ICP-OES) were suitable methods for the determination of boron in the analyzed samples (Table 1). If very accurate analysis is required, especially in the case of very low concentrations, the more suitable method is inductively coupled plasma optical emission spectrometry provided that the samples are properly prepared. Graphite furnace atomic absorption spectrometry is not suitable for the determination of boron in samples of this type. During the analysis, additional attention was paid to the elimination of the negative impact of the graphite cuvette on the result of the analysis. In this article it was also studied the influence of the process of dissolution of the samples on the obtained results. The results showed that careful preparation of samples in a closed system contributes to a more accurate result of analysis.

This work is licensed under a Creative Commons Attribution 4.0 International License

Keywords

graphite furnace atomic absorption spectrometry (AAS-GF), inductively coupled plasma optical emission spectrometry (ICP-OES), direct reading optical emission spectrometry (OES), boron, metallurgical samples