Chemical analysis of industrial scale deposits by combined use of correlation coefficients with emission line detection of laser induced breakdown spectroscopy spectra

2013 ◽  
Vol 87 ◽  
pp. 86-91 ◽  
Author(s):  
P. Siozos ◽  
A. Philippidis ◽  
M. Hadjistefanou ◽  
C. Gounarakis ◽  
D. Anglos
Keyword(s):  
Chemical Analysis ◽  
Emission Line ◽  
Correlation Coefficients ◽  
Industrial Scale ◽  
Laser Induced Breakdown Spectroscopy ◽  
Line Detection ◽  
Breakdown Spectroscopy ◽  
Combined Use ◽  
Laser Induced Breakdown ◽  
Scale Deposits

A study of underwater stand-off laser-induced breakdown spectroscopy for chemical analysis of objects in the deep ocean

2015 ◽  
Vol 30 (5) ◽  
pp. 1050-1056 ◽  
Author(s):  
F. J. Fortes ◽  
S. Guirado ◽  
A. Metzinger ◽  
J. J. Laserna
Keyword(s):  
Chemical Analysis ◽  
Deep Ocean ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Submerged Objects ◽  
First Time

In this work, we demonstrate for the first time the feasibility of stand-off laser induced breakdown spectroscopy (ST-LIBS) for the analysis of distant submerged objects.

scholarly journals Quantitative Analysis of Cerium-Gallium Alloys Using a Hand-Held Laser Induced Breakdown Spectroscopy Device

Atoms ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 84 ◽  
Author(s):  
Ashwin P. Rao ◽  
Matthew T. Cook ◽  
Howard L. Hall ◽  
Michael B. Shattan
Keyword(s):  
Emission Line ◽  
Limit Of Detection ◽  
Weight Percent ◽  
Emission Lines ◽  
Resolving Power ◽  
Laser Induced Breakdown Spectroscopy ◽  
Significant Heterogeneity ◽  
Emission Data ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

A hand-held laser-induced breakdown spectroscopy device was used to acquire spectral emission data from laser-induced plasmas created on the surface of cerium-gallium alloy samples with Ga concentrations ranging from 0–3 weight percent. Ionic and neutral emission lines of the two constituent elements were then extracted and used to generate calibration curves relating the emission line intensity ratios to the gallium concentration of the alloy. The Ga I 287.4-nm emission line was determined to be superior for the purposes of Ga detection and concentration determination. A limit of detection below 0.25% was achieved using a multivariate regression model of the Ga I 287.4-nm line ratio versus two separate Ce II emission lines. This LOD is considered a conservative estimation of the technique’s capability given the type of the calibration samples available and the low power (5 mJ per 1-ns pulse) and resolving power ( λ / Δ λ = 4000) of this hand-held device. Nonetheless, the utility of the technique is demonstrated via a detailed mapping analysis of the surface Ga distribution of a Ce-Ga sample, which reveals significant heterogeneity resulting from the sample production process.

Laser-induced breakdown spectroscopy (LIBS) applications in the chemical analysis of waste electrical and electronic equipment (WEEE)

2018 ◽  
Vol 108 ◽  
pp. 65-73 ◽  
Author(s):  
Vinícius Câmara Costa ◽  
Jeyne Pricylla Castro ◽  
Daniel Fernandes Andrade ◽  
Diego Victor Babos ◽  
José Augusto Garcia ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Electronic Equipment ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Libs Applications

scholarly journals Laser-Induced Breakdown Spectroscopy of AL-Samples: Application to Chemical Analysis of Metallic Elementsf

1995 ◽  
Vol 16 (2) ◽  
pp. 75-82 ◽  
Author(s):  
B. Bescós ◽  
J. Castaño ◽  
A. González Ureña
Keyword(s):  
Chemical Analysis ◽  
Simultaneous Detection ◽  
Laser Induced Breakdown Spectroscopy ◽  
Minor Components ◽  
Experimental Conditions ◽  
Breakdown Spectroscopy ◽  
Non Invasive ◽  
Multichannel Analysis ◽  
Laser Induced Breakdown ◽  
On Line

This paper reports on the simultaneous detection of Mg, Mn, Fe and Pb in Al samples using laser-induced breakdown spectroscopy and optical multichannel analysis of the photoablated microplasma. Using calibrated samples, well characterized linear working curves were determined for these minor components over the 0.01–1% concentration range. In addition optimum experimental conditions were found that allow the analysis to be carded out in a fast and non-invasive manner. The potential application of the method to on-line industrial analysis is also suggested.

scholarly journals Development of a Method for the Determination of Chromium and Cadmium in Tannery Wastewater Using Laser-Induced Breakdown Spectroscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Mahwish Bukhari ◽  
M. Ali Awan ◽  
Ishtiaq A. Qazi ◽  
M. Anwar Baig
Keyword(s):  
Solid Phase ◽  
Correlation Coefficients ◽  
Sample Surface ◽  
Tannery Wastewater ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Surface Distance ◽  
Laser Induced Breakdown ◽  
Wastewater Samples

This paper illustrates systematic development of a convenient analytical method for the determination of chromium and cadmium in tannery wastewater using laser-induced breakdown spectroscopy (LIBS). A new approach was developed by which liquid was converted into solid phase sample surface using absorption paper for subsequent LIBS analysis. The optimized values of LIBS parameters were 146.7 mJ for chromium and 89.5 mJ for cadmium (laser pulse energy), 4.5 μs (delay time), 70 mm (lens to sample surface distance), and 7 mm (light collection system to sample surface distance). Optimized values of LIBS parameters demonstrated strong spectrum lines for each metal keeping the background noise at minimum level. The new method of preparing metal standards on absorption papers exhibited calibration curves with good linearity with correlation coefficients,R2in the range of 0.992 to 0.998. The developed method was tested on real tannery wastewater samples for determination of chromium and cadmium.

Rapid determination of water COD using laser-induced breakdown spectroscopy coupled with partial least-squares and random forest

2018 ◽  
Vol 10 (40) ◽  
pp. 4879-4885 ◽  
Author(s):  
Song Ye ◽  
Xiao Chen ◽  
Daming Dong ◽  
Jiejun Wang ◽  
Xinqiang Wang ◽  
...  
Keyword(s):  
Water Quality ◽  
Random Forest ◽  
Chemical Analysis ◽  
Rapid Determination ◽  
Oxygen Demand ◽  
Laser Induced Breakdown Spectroscopy ◽  
Water Quality Indicator ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Chemical oxygen demand (COD) is a water quality indicator that is typically measured by lengthy chemical analysis methods in the laboratory, which indicates that obtaining rapid results is difficult.

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