Effect of data set size on geochemical quantification accuracy with laser-induced breakdown spectroscopy

Current Investigation ◽

Plasma Parameters ◽

Data Set ◽

Breakdown Spectroscopy ◽

Laser Induced Breakdown ◽

Business Sectors

Electron thickness and temperature of laser prompted Iron plasma boundaries, among different boundaries, were estimated. Plasma was delivered through the connection of high pinnacle power Nd: YAG laser at the key frequency of 1064 nm with a pellet target contains a limited quantity of lipstick from nearby business sectors. Lines from Fe II at 238.502 nm, Fe II at 254.904 nm, Fe II at 262.370 nm, Fe II at 286.545 nm and Fe I at 349.779 nm were utilized to assess the plasma boundaries. The current investigation was completed to assess electron temperature (Te), electron thickness (ne), plasma recurrence, Debye length and Debye number (ND). Laser-incited breakdown spectroscopy LIBS method was used for examining and deciding ghastly discharge lines. ID of change lines from all spectra was completed by contrasting ghostly lines and NIST nuclear data set.

Spectral clustering based on histogram of oriented gradient (HOG) of coal using laser-induced breakdown spectroscopy

Journal of Analytical Atomic Spectrometry ◽

10.1039/d1ja00104c ◽

2021 ◽

Author(s):

Ji Chen ◽

Kaiping Zhan ◽

Qingzhou Li ◽

Zhiyang Tang ◽

Chenwei Zhu ◽

...

Keyword(s):

Spectral Clustering ◽

Matrix Effects ◽

Unsupervised Clustering ◽

Histogram Of Oriented Gradient ◽

Breakdown Spectroscopy ◽

Laser Induced Breakdown ◽

The Matrix ◽

Quantification Accuracy

The quantification accuracy of laser-induced breakdown spectroscopy was limited due to matrix effects. In this work, a method named unsupervised-clustering-based quantification (UCQ) was proposed to reduce the matrix effects by...

Laser Induced Breakdown Spectroscopy (LIBS): Application to Geological Materials-=SUP=-*-=/SUP=-

Оптика и спектроскопия ◽

10.21883/os.2021.10.51502.1003-21 ◽

2021 ◽

Vol 129 (10) ◽

pp. 1336

Author(s):

Sonali Dubey ◽

Rohit Kumar ◽

Abhishek K. Rai ◽

Awadhesh K. Rai

Keyword(s):

Planetary Exploration ◽

Field Analysis ◽

Data Set ◽

Geological Materials ◽

Breakdown Spectroscopy ◽

Spot Detection ◽

Huge Data ◽

Laser-induced breakdown spectroscopy (LIBS) is emerging as an analytical tool for investigating geological materials. The unique abilities of this technique proven its potential in the area of geology. Detection of light elements, portability for in-field analysis, spot detection, and no sample preparation are some features that make this technique appropriate for the study of geological materials. The application of the LIBS technique has been tremendously developed in recent years. In this report, results obtained from previous and most recent studies regarding the investigation of geological materials LIBS technique are reviewed. Firstly, we introduce investigations that report the advancement in LIBS instrumentation, its applications, especially in the area of gemology and the extraterrestrial/planetary exploration have been reviewed. Investigation of gemstones by LIBS technique is not widely reviewed in the past as compared to LIBS application in planetary exploration or other geological applications. It is anticipated that for the classification of gemstones samples, huge data set is appropriate and to analyze this data set, multivariate/chemometric methods will be useful. Recent advancement of LIBS instrumentation for the study of meteorites, depth penetration in Martian rocks and its regolith proved the feasibility of LIBS used as robotic vehicles in the Martian environment. Keywords: LIBS, Gemstone, geological samples, Extra-terrestrial

Quantitative Analysis of Pig Iron from Steel Industry by Handheld Laser-Induced Breakdown Spectroscopy and Partial Least Square (PLS) Algorithm

Applied Sciences ◽

10.3390/app10238461 ◽

2020 ◽

Vol 10 (23) ◽

pp. 8461

Author(s):

Giorgio S. Senesi ◽

Olga De Pascale ◽

Aldo Bove ◽

Bruno S. Marangoni

Keyword(s):

Blast Furnace ◽

Steel Production ◽

Partial Least Square ◽

Least Square ◽

Pig Iron ◽

Laboratory Equipment ◽

Data Set ◽

Breakdown Spectroscopy ◽

One of the main objectives in the steel production process is to obtain a blast furnace pig iron of good quality and at the lowest possible cost. In general, the quality of pig iron is evaluated on the basis of its chemical composition determined by X-ray fluorescence laboratory equipment. In the present study, the performance of a handheld (h) laser-induced breakdown spectroscopy (LIBS) instrument in the identification and the quantification of the relevant elements C, Mn, P, Si, and Ti in forty-six blast furnace pig iron samples was tested successfully. The application of two different models, i.e., univariate and multivariate partial least square (PLS) calibration and validation, to the whole LIBS data set showed that the latter approach was much more efficient than the former one in quantifying all elements considered, especially Si and Ti.

Laser-Induced Breakdown Spectroscopy (LIBS)

10.1017/cbo9780511541261 ◽

2006 ◽

Cited By ~ 555

Keyword(s):

Breakdown Spectroscopy ◽

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

The European Physical Journal Applied Physics ◽

10.1051/epjap/2020200258 ◽

2020 ◽

Vol 92 (2) ◽

pp. 20701

Author(s):

Bo Li ◽

Xiaofeng Li ◽

Zhifeng Zhu ◽

Qiang Gao

Keyword(s):

Femtosecond Laser ◽

Spatial Resolution ◽

Nanosecond Laser ◽

Breakdown Threshold ◽

Powerful Technique ◽

Breakdown Spectroscopy ◽

Continuous Radiation ◽

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.