Correction and analysis of lead content in soil by laser-induced breakdown spectroscopy |
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| Authors: | Chengli Xie Jidong Lu Pengyan Li Jie Li Zhaoxiang Lin |
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| Institution: | 1. State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China
2. College of Electrics and Information Engineering,South-Central University for Nationalities,Wuhan 430074,China |
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| Abstract: | The laser-induced breakdown spectroscopy is used to analyze the lead content in soils. The analyzed spectral line profile is fittcd by Lorentzian function for determining the background and the full-width at half-maximum (FWHM) intensity of spectral line. A self-absorption correction model based on the information of spectral broadening is introduced to calculate the true value of spectral line intensity,which refers to the elcnmntal concentration.Tile results show that the background intensity obtained by spectral profile fitting is very effective and important due to removing the interference of spectral broadening,and a better precision of calibration analysis is acquired by correcting the self-absorption effect. |
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