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An intensity correction method combined with plasma position information for laser-induced breakdown spectroscopy
Zhang P(张鹏); Sun LX(孙兰香); Yu HB(于海斌); Zeng P(曾鹏); Qi LF(齐立峰); Xin Y(辛勇)
Department工业控制网络与系统研究室
Source PublicationJOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN0267-9477
2017
Volume32Issue:12Pages:2371-2377
Indexed BySCI ; EI
EI Accession number20174904505007
WOS IDWOS:000416809200005
Contribution Rank1
Funding OrganizationNational Natural Science Foundation of China [61473279] ; National Key Research and Development Program of China [2016YFF0102502] ; Key Research Program of Frontier Sciences CAS [QYZDJ-SSW-JSC037] ; Youth Innovation Promotion Association CAS
AbstractThe uncertainty of collected spectral data is one of the most important issues for the application of laser-induced breakdown spectroscopy (LIBS) quantitative analysis. The fluctuation of the target surface simultaneously affects both the focus depth of the laser beam and the relative collection position, either of which may lead to severe fluctuation of the spectral signal. Thus, in this study, for detecting and reducing the fluctuation, an imaging system was deployed to monitor the plasma, and a mathematical model was also built based on both spectral signal and positional information. An ICCD camera was used to record the image of the plasma so as to detect the plasma and acquire positional information. Furthermore, the relationship between plasma position and specific spectral line intensity was obtained by the fitting function. Five aluminium alloy samples were employed to validate the reliability of the proposed method. As a result, the average RSDs of the samples (with a position fluctuation range of about 2 mm) in different spectral lines (Si 288.15 nm, Fe 273.95 nm, Cu 324.75 nm, Mn 259.37 nm and Mg 280.27 nm) were reduced from 34.57%, 38.86%, 31.05%, 39.74%, and 36.91% (without normalization) to 4.63%, 6.84%, 5.64%, 7.64%, and 4.83% (with the combination method presented in this paper), respectively; the determination coefficients (R-2) reached 0.996, 0.999, 0.989, 0.999, and 0.9999, respectively. These results prove that the proposed method can both improve measurement reliability and guarantee measurement accuracy.
Language英语
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Analytical ; Spectroscopy
WOS KeywordSPECTRUM STANDARDIZATION ; QUANTITATIVE-ANALYSIS ; LIBS ; NORMALIZATION ; SIGNAL ; MODEL
WOS Research AreaChemistry ; Spectroscopy
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Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/21384
Collection工业控制网络与系统研究室
Corresponding AuthorSun LX(孙兰香)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory of Networked Control System, CAS, Shenyang 110016, China
Recommended Citation
GB/T 7714
Zhang P,Sun LX,Yu HB,et al. An intensity correction method combined with plasma position information for laser-induced breakdown spectroscopy[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2017,32(12):2371-2377.
APA Zhang P,Sun LX,Yu HB,Zeng P,Qi LF,&Xin Y.(2017).An intensity correction method combined with plasma position information for laser-induced breakdown spectroscopy.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,32(12),2371-2377.
MLA Zhang P,et al."An intensity correction method combined with plasma position information for laser-induced breakdown spectroscopy".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 32.12(2017):2371-2377.
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