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Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method
文献类型：期刊论文
| 作者 | Sun LX(孙兰香) ; Yu HB(于海斌)
|
| 刊名 | Talanta
 |
| 出版日期 | 2009 |
| 卷号 | 79期号:2页码:388-395 |
| 关键词 | LIBS Self-absorption Internal reference Calibration-free quantitative analysis Boltzmann plot |
| ISSN号 | 0039-9140 |
| 产权排序 | 1 |
| 通讯作者 | 于海斌 |
| 中文摘要 | A simplified procedure for correcting self-absorption effect was proposed in calibration-free laser-induced breakdown spectroscopy (CF-LIBS). In typical LIBS measurement conditions, the plasma produced is often optically thick, especially for the strong lines of major elements. The selection of self-absorption lines destroys the performance of CF-LIBS, and the familiar correction method based on the curve of growth is complex in implementation. The procedure we proposed, named internal reference for self-absorption correction (IRSAC), first chose an internal reference line for each species, then compared other spectral line intensity of the same species with the reference line to estimate the self-absorption degrees of other spectral lines, and finally achieved an optimal correction by a regressive algorithm. The self-absorption effect of the selected reference line can be ignored, since the reference line with high excitation energy of the upper level is slightly affected by the self-absorption. Through the IRSAC method, the points on the Boltzmann plot become more regular, and the evaluations of the plasma temperature and material composition are more accurate than the basic CF-LIBS. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Analytical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | QUANTITATIVE ELEMENTAL ANALYSIS ; INDUCED PLASMA SPECTROSCOPY ; STEEL ; SPECTROMETRY ; TECHNOLOGY ; MATRIX ; WATER ; MELTS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268216900044 |
| 公开日期 | 2012-05-29 |
| 源URL | [http://ir.sia.cn/handle/173321/7069]  |
| 专题 | 沈阳自动化研究所_工业信息学研究室 |
| 推荐引用方式 GB/T 7714 | Sun LX,Yu HB. Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method[J]. Talanta,2009,79(2):388-395. |
| APA | Sun LX,&Yu HB.(2009).Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method.Talanta,79(2),388-395. |
| MLA | Sun LX,et al."Correction of self-absorption effect in calibration-free laser-induced breakdown spectroscopy by an internal reference method".Talanta 79.2(2009):388-395. |
入库方式： OAI收割
来源：沈阳自动化研究所
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