An intensity correction method combined with plasma position information for laser-induced breakdown spectroscopy
文献类型：期刊论文
| 作者 | Zhang P(张鹏) ; Xin Y(辛勇); Qi LF(齐立峰); Yu HB(于海斌); Zeng P(曾鹏); Sun LX(孙兰香)
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| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
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| 出版日期 | 2017 |
| 卷号 | 32期号:12页码:2371-2377 |
| ISSN号 | 0267-9477 |
| 产权排序 | 1 |
| 通讯作者 | Sun LX(孙兰香) |
| 中文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Analytical ; Spectroscopy |
| 研究领域[WOS] | Chemistry ; Spectroscopy |
| 关键词[WOS] | SPECTRUM STANDARDIZATION ; QUANTITATIVE-ANALYSIS ; LIBS ; NORMALIZATION ; SIGNAL ; MODEL |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000416809200005 |
| 源URL | [http://ir.sia.cn/handle/173321/21384]  |
| 专题 | 沈阳自动化研究所_工业控制网络与系统研究室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 3.Key Laboratory of Networked Control System, CAS, Shenyang 110016, China |
| 推荐引用方式 GB/T 7714 | Zhang P,Xin Y,Qi LF,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,Xin Y,Qi LF,Yu HB,Zeng P,&Sun LX.(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. |
入库方式： OAI收割
来源：沈阳自动化研究所
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