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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 53, Iss. 10 — Oct. 1, 1999
  • pp: 1259–1267

Improvements in Quantitative Analysis of Steel Composition by Laser-Induced Breakdown Spectroscopy at Atmospheric Pressure Using an Infrared Nd:YAG Laser

C. Aragon, J. A. Aguilera, and F. Penalba

Applied Spectroscopy, Vol. 53, Issue 10, pp. 1259-1267 (1999)


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Abstract

The experimental conditions and procedure for quantitative analysis of steel by laser-induced breakdown spectroscopy in argon at atmospheric pressure using an infrared Nd:YAG laser have been studied. Satisfactory analytical results have been obtained for the determination of C, Si, Cr, and Ni contents in low-alloyed steels. The lens-to-sample distance is shown to be a relevant parameter, which can be selected at each pulse energy to enhance the line intensities and the repeatability of measurements. A higher precision has been obtained for line-intensity ratios (0.9-2.5% relative standard deviation for concentrations higher than 0.1%) than for absolute intensity measurements. The calibration curves for all the elements have correlation coefficients above 0.999. Detection limits are in the range 6-80 ppm.

Citation
C. Aragon, J. A. Aguilera, and F. Penalba, "Improvements in Quantitative Analysis of Steel Composition by Laser-Induced Breakdown Spectroscopy at Atmospheric Pressure Using an Infrared Nd:YAG Laser," Appl. Spectrosc. 53, 1259-1267 (1999)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-53-10-1259


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