2014 Volume 100 Issue 7 Pages 832-845
Chemical methods of analysis of steel samples are significantly considered in the perspective of precision, trueness and accuracy of analytical results, as the standardization for control of iron and steel making process. On the other hand, automatic apparatus for wet chemical analysis have been required, in relation to rationalize the analytical procedures with complicated pre-treatment steps taking a lot of skill and time. In the present paper, Automatic Photometric Analyzers, Technicon AutoAnalyzers and Flow Injection Analysis (FIA) systems for the automation of wet chemical analysis, which have been developed during the last several decades, were reviewed. Especially, FIA systems has been examined studiously due to low reagent and sample consumption, good reproducibility and repeatability, minimal sample contamination in a closed analytical system, and reduced skill and time for analysis. Applications of FIA for Bi, Mn, N, B, Mo, and Cr in steel samples, and electrolytic decomposition method of steel samples were mentioned particularly. The prospective developments of automatic techniques of chemical analysis in future were also proposed.