Technical report

No.9 Special Issue on "Analytical Sciences and Microstructural Characterization″ and "Steel Sheet for Can-making″

Direct Determination of Trace Elements in Steel by Laser Ablation/ICP-MS


ISHIDA Tomoharu     AKIYOSHI Takanori     KINOSHIRO Satoshi

Abstract

Elemental fractionation (non-stoichiometric generation of vapor species) can be canceled with repeated laser irradiation in an adequate area without vacant space by a developed laser ablation (LA) system. Particles generated with this system were induced to inductively coupled plasma mass spectrometry (ICP-MS) for quantitative determination of trace elements (B, As, Sb, Pb) in steel samples. Analytical performance of the developed LA-ICP-MS was investigated with standard reference materials of iron. The analytical results showed that this method has sufficient precision, sensitivity and accuracy for the analysis of steel samples in the μg/g level concentration of trace elements. This system can reduce much time for the determination of trace elements compared with solution ICP-MS or electrothermal vaporization atomic absorption spectrometry.

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