Improving data stability and prediction accuracy in laser-induced breakdown spectroscopy by utilizing a combined atomic and ionic line algorithm

2013 ◽  
Vol 28 (1) ◽  
pp. 107-113 ◽  
Author(s):  
Zongyu Hou ◽  
Zhe Wang ◽  
Siu-lung Lui ◽  
Tingbi Yuan ◽  
Lizhi Li ◽  
...  
Keyword(s):  
Prediction Accuracy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ionic Line ◽  
Laser Induced Breakdown

High spectral stability and quantitative accuracy of LIBS by optimization of combined atomic and ionic line algorithm

2022 ◽  
Author(s):  
Yubin Xu ◽  
Zhenlin Hu ◽  
Feng Chen ◽  
Deng Zhang ◽  
Junfei Nie ◽  
...  
Keyword(s):  
Large Scale ◽  
Spectral Stability ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ionic Line ◽  
Quantitative Accuracy ◽  
Laser Induced Breakdown ◽  
Precision And Accuracy

Large spectral fluctuations bring large errors in laser-induced breakdown spectroscopy (LIBS) analysis, which impedes the improvement of precision and accuracy, limiting the large-scale application and commercialization. In this work, we...

Quantitative analysis of coal quality by laser-induced breakdown spectroscopy assisted with different chemometric methods

2020 ◽  
Vol 12 (27) ◽  
pp. 3530-3536
Author(s):  
Youjian Zhang ◽  
Zhang Xiong ◽  
Yiwen Ma ◽  
Chenwei Zhu ◽  
Ran Zhou ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Prediction Accuracy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Chemometric Methods ◽  
Coal Quality ◽  
Breakdown Spectroscopy ◽  
Calibration Methods ◽  
Laser Induced Breakdown

LIBS technique assisted with four different chemometric methods was applied to rapid and accurate measurement of coal quality, and the modeling efficiency and prediction accuracy of the four calibration methods were compared and discussed.

Quantitative analysis of chromium in pork by PSO-SVM chemometrics based on laser induced breakdown spectroscopy

2019 ◽  
Vol 34 (5) ◽  
pp. 884-890 ◽  
Author(s):  
Tianbing Chen ◽  
Linying Zhang ◽  
Lin Huang ◽  
Muhua Liu ◽  
Jinyin Chen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantitative Analysis ◽  
Spectral Data ◽  
Prediction Accuracy ◽  
Metal Content ◽  
Quantitative Prediction ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Ann Models

The PSO-SVM method shown here, for the analysis of LIBS spectral data, provides much better fitting results and prediction accuracy than siPLS and MLP-ANN models for the quantitative prediction of heavy metal content in pork.

A laser induced breakdown spectroscopy quantitative analysis method based on the robust least squares support vector machine regression model

2015 ◽  
Vol 30 (7) ◽  
pp. 1541-1551 ◽  
Author(s):  
Jianhong Yang ◽  
Cancan Yi ◽  
Jinwu Xu ◽  
Xianghong Ma
Keyword(s):  
Quantitative Analysis ◽  
Prediction Accuracy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Support Vector ◽  
Analysis Method ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Quantitative Analysis Method ◽  
Robust Least Squares ◽  
Multiple Measurements

Data fluctuation in multiple measurements of Laser Induced Breakdown Spectroscopy (LIBS) greatly affects the accuracy of quantitative analysis. Our proposed method achieved better prediction accuracy and modeling robustness.

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

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