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Proceedings Paper

A low-cost laser-induced breakdown spectrometer for multielements analysis of solid iron and steel samples
Author(s): Ningjuan Yao; Zhijun Yang; Jiwen Chen; Haizhou Wang
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Paper Abstract

A low-cost laser-induced breakdown spectrometer designed and equipped with Q-switch Nd:YAG laser at 1064 nm, 750mm Paschen - Runge polychromator and photomultiplier(PMT) detectors, can be used for analyzing multielements simultaneously in complex iron and steel matrices in short time. Gate control unit with the minimum gate width of 25 ns and minimum gate delay of 300ns is utilized to acquire a signal only when the S/N ratio is at an optimum level. At laser power density of 2.5~6.9G W/cm2, a gate delay time of 2 us, gate pulse width of 10us and Ar flow rate of 0.4l/min, high sensible and stable spectral intensity was obtained for thirteen elements in iron and steel sample. Calibration graphs for thirteen elements were established under optimized conditions, and the accuracy of the developed methods was evaluated by using two certified reference samples. Quantitative results showed that there was no significant difference between certified and found values. The reproducibility was in the range 1~6% RSD for certified reference sample.

Paper Details

Date Published: 23 February 2006
PDF: 5 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615042 (23 February 2006); doi: 10.1117/12.676521
Show Author Affiliations
Ningjuan Yao, Central Iron & Steel Research Institute (China)
Zhijun Yang, Central Iron & Steel Research Institute (China)
Jiwen Chen, Central Iron & Steel Research Institute (China)
Haizhou Wang, Central Iron & Steel Research Institute (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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