Iterative multi-energy calibration and its application in online alloy smelting process monitoring using laser-induced breakdown spectroscopy

2020 ◽  
Vol 35 (10) ◽  
pp. 2171-2178
Author(s):  
Xin Li ◽  
Tianzhuo Zhao ◽  
Qixiu Zhong ◽  
Shuzhen Nie ◽  
Hong Xiao ◽  
...  
Keyword(s):  
Process Monitoring ◽  
Standard Sample ◽  
Energy Calibration ◽  
Smelting Process ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

IMEC: one standard sample, multiple rounds of self-correction, and higher performance.

Multi-energy calibration and sample fusion as alternatives for quantitative analysis of high silicon content samples by laser-induced breakdown spectrometry

2019 ◽  
Vol 34 (8) ◽  
pp. 1701-1707 ◽  
Author(s):  
Alexandrina A. C. Carvalho ◽  
Larissa A. Cozer ◽  
Maciel S. Luz ◽  
Lidiane C. Nunes ◽  
Fábio R. P. Rocha ◽  
...  
Keyword(s):  
Particle Size ◽  
Quantitative Analysis ◽  
Size Effects ◽  
Silicon Content ◽  
Energy Calibration ◽  
Laser Induced Breakdown Spectroscopy ◽  
Complex Samples ◽  
Matrix Interferences ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Calibration aiming at quantitative analysis of complex samples is one of the most difficult issues in laser-induced breakdown spectroscopy (LIBS) due to matrix interferences, heterogeneity, and sample particle size effects.

Multi-energy calibration (MEC) applied to laser-induced breakdown spectroscopy (LIBS)

2018 ◽  
Vol 33 (10) ◽  
pp. 1753-1762 ◽  
Author(s):  
Diego Victor Babos ◽  
Alex Virgilio ◽  
Vinícius Câmara Costa ◽  
George Luis Donati ◽  
Edenir Rodrigues Pereira-Filho
Keyword(s):  
Solid Sample ◽  
Energy Calibration ◽  
Laser Induced Breakdown Spectroscopy ◽  
Sample Analysis ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Solid Sample Analysis

The multi-energy calibration (MEC) method is applied to solid sample analysis by laser-induced breakdown spectroscopy (LIBS).

scholarly journals Application of Multi-energy Calibration for Determination of Chromium and Nickel in Nickeliferous Ores by Laser-induced Breakdown Spectroscopy

2019 ◽  
Vol 35 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Felipe M. FORTUNATO ◽  
Tiago Augusto CATELANI ◽  
Mario Siméon POMARES-ALFONSO ◽  
Edenir Rodrigues PEREIRA-FILHO
Keyword(s):  
Energy Calibration ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

A method for improving the accuracy of calibration-free laser-induced breakdown spectroscopy (CF-LIBS) using determined plasma temperature by genetic algorithm (GA)

2015 ◽  
Vol 30 (6) ◽  
pp. 1336-1344 ◽  
Author(s):  
Juan Dong ◽  
Long Liang ◽  
Jiao Wei ◽  
Hongsheng Tang ◽  
Tianlong Zhang ◽  
...  
Keyword(s):  
Standard Sample ◽  
Plasma Temperature ◽  
The Self ◽  
Laser Induced Breakdown Spectroscopy ◽  
Internal Reference ◽  
Absorption Effect ◽  
Breakdown Spectroscopy ◽  
External Standard ◽  
Laser Induced Breakdown ◽  
Calibration Free

An internal reference-external standard with iteration correction (IRESIC) method is proposed to correct for the self-absorption effect and plasma temperature in CF-LIBS based on an internal reference line and one standard sample.

scholarly journals Spectrochemical Analysis of Soil around Leather Tanning Industry Using Laser Induced Breakdown Spectroscopy

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Shakeel Ahmad Khan ◽  
Muhammad Ibrahim ◽  
Yasir Jamil ◽  
Md. Saiful Islam ◽  
Farhat Abbas
Keyword(s):  
Standard Sample ◽  
Limit Of Detection ◽  
Industrial Effluents ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Leather Tanning ◽  
Qualitative Detection ◽  
Laser Induced Breakdown ◽  
Safe Limits ◽  
Tanning Industry

We report the use of laser induced breakdown spectroscopy (LIBS) to determine the chromium contamination of soil due to effluents from leather tanning industry in Kasur District of Punjab (+31∘6′23.21″,+74∘27′16.29″) in Pakistan. Calibration curves were constructed by indigenously prepared standard sample and fitting of curves by linear regression. The limit of detection (LOD) was found to be 23.71 mg kg−1. It has been found that the concentration of chromium in the soil is up to 839 mg kg−1in vicinity of effluent drain and 1829 mg kg−1in the area of old stagnant pool, which is much higher than the safe limits. Qualitative detection of other elements like Na, Cl, Fe, P, and Si was done from LIBS spectra. The leaching of soil contaminants due to seepage of industrial effluents from deteriorating brick lined drains in horizontal direction has also been observed.

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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