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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)
作者部门工业控制网络与系统研究室
发表期刊JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN0267-9477
2017
卷号32期号:12页码:2371-2377
收录类别SCI ; EI
EI收录号20174904505007
WOS记录号WOS:000416809200005
产权排序1
资助机构National 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
摘要The 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.
语种英语
WOS标题词Science & Technology ; Physical Sciences ; Technology
WOS类目Chemistry, Analytical ; Spectroscopy
关键词[WOS]SPECTRUM STANDARDIZATION ; QUANTITATIVE-ANALYSIS ; LIBS ; NORMALIZATION ; SIGNAL ; MODEL
WOS研究方向Chemistry ; Spectroscopy
引用统计
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/21384
专题工业控制网络与系统研究室
通讯作者Sun LX(孙兰香)
作者单位1.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
推荐引用方式
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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