Different calibration strategies to overcome matrix effect in steel analysis by laser-induced breakdown spectroscopy

Авторы: Labutin T.A., Popov A.M., Seliverstova I.V., Zorov N.B.
Сборник: Proceedings of SPIE - The International Society for Optical Engineering
Год издания: 2011
Первая страница: 799420
DOI: 10.1117/12.881140
Аннотация: Strong effect of steel hardness on the parameters of laser-induced plasma (e.g., temperature) and on the calibration curves for manganese and chromium in steels has been demonstrated. The presence of the inverse correlation between the steel hardness and the excitation temperature determined by Mn I lines was explained by the confinement of laser plasma with the crater walls. A new calibration strategy based on the summation of intensities for several lines of the analyte allowed one to reduce the effect of matrix, caused by mechanical properties, on the determination of chromium and manganese in steels. The advantages of this strategy are discussed in the article in comparison with the wellestablished approaches, such as an internal standard and single analytical line.
Добавил в систему: Лабутин Тимур Александрович

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