Article (Scientific journals)
Investigation on the Delay Time of Coal Experiment by Laser-Induced Breakdown Spectroscopy
Li, Jie; Lu, Jidong; Xie, Chengli et al.
2008In Spectroscopy and Spectral analysis, 28 (4), p. 736-739
Peer reviewed
 

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Keywords :
Coal analysis; Laser-induced breakdown spectroscopy; Delay time; Signal-to-noise ratio
Abstract :
[en] Laser-induced breakdown spectroscopy is a new technology of elementary analysis , and it will be used in coal analysis. The delay time of signal is an important parameter of spectral analysis. A LIBS system was set up and three kinds of coal (Jiangxipingxiang coal , Shanxixishan coal and Guizhoupingzhai coal) were chosen for this investigation. The spectra in the range of 240 to 250 nm and 275 to 290 nm of the each three coal samples are shown and they record several spect ral lines of components such as C , Mg and Si according to the NIST database. The temporal evolution of SNR of spectral line was obtained , and the value of SNR increased with the time delay , then decayed. The temporal evolution of SNR was different as the coal , element and spectral line differs. Finally, optimum delay time of each spectral lines of element s in the coal samples was calculated according to the biggest value of signal-to-noise ratio , and the relation between the characteristic of coal , element, spectral line and the optimum delay time was analyzed.
Disciplines :
Energy
Author, co-author :
Li, Jie ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Procédés et développement durable
Lu, Jidong
Xie, Chengli
Lin, Zhaoxiang
Zhang, Wenyan
Li, Yong
Language :
Chinese
Title :
Investigation on the Delay Time of Coal Experiment by Laser-Induced Breakdown Spectroscopy
Publication date :
2008
Journal title :
Spectroscopy and Spectral analysis
ISSN :
1000-0593
Publisher :
Peking University Press, Beijing, China
Volume :
28
Issue :
4
Pages :
736-739
Peer reviewed :
Peer reviewed
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