Laser-induced breakdown spectroscopy (LIBS) spectra interpretation and characterization using parallel factor analysis (PARAFAC): a new procedure for data and spectral interference processing fostering the waste electrical and electronic equipment (WEEE) recycling process

2020 ◽  
Vol 35 (6) ◽  
pp. 1115-1124 ◽  
Author(s):  
Jeyne Pricylla Castro ◽  
Edenir Rodrigues Pereira-Filho ◽  
Rasmus Bro
Keyword(s):  
Printed Circuit Board ◽  
Relative Concentration ◽  
Circuit Board ◽  
Recycling Process ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Parallel Factor ◽  
Interference Processing ◽  
First Time ◽  
Signal Profile

For the first time, PARAFAC was used to interpret and characterize LIBS spectra, providing the pure spectra, the signal profile and relative concentration of base and noble elements present on a printed circuit board from the hard disk.

Laser-induced breakdown spectroscopy (LIBS) combined with hyperspectral imaging for the evaluation of printed circuit board composition

Talanta ◽  
2015 ◽  
Vol 134 ◽  
pp. 278-283 ◽  
Author(s):  
Rodrigo R.V. Carvalho ◽  
Jomarc A.O. Coelho ◽  
Jozemir M. Santos ◽  
Francisco W.B. Aquino ◽  
Renato L. Carneiro ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Laser Induced Breakdown Spectroscopy ◽  
Board Composition ◽  
Printed Circuit ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

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.

Destruction of pollutants in industrial rinse waters by advanced oxidation processes

1997 ◽  
Vol 35 (4) ◽  
pp. 287-292 ◽  
Author(s):  
F. Luck ◽  
M. Djafer ◽  
N. Karpel Vel Leitner ◽  
B. Gombert ◽  
B. Legube
Keyword(s):  
Heterogeneous Catalysts ◽  
Printed Circuit Board ◽  
Negative Impact ◽  
Oxygen Demand ◽  
Chemical Oxidation ◽  
Circuit Board ◽  
Organic Additives ◽  
Cooperative Research ◽  
Recycling Process ◽  
Rinse Water

Recycling process water is a growing need for a variety of industries faced with increasing water costs and environmental constraints. Metal finishing activities such as printed circuit board (PCB) manufacturing generate large volumes of rinse water slightly contaminated with inorganic chemicals and organic additives. While the former can be removed with proven technologies, there is a need for effective processes for elimination of trace organics in order to allow recycling of rinse water without negative impact on process bath quality. A cooperative research project started recently to study a water recycling process adapted to this need, able to remove 95% of the Chemical Oxygen Demand (COD) of the rinse water by combining proven membrane separation with an innovative chemical oxidation. Two types of advanced oxidations based on the conjunction of heterogeneous catalysts with oxidants will be specifically investigated. In a preliminary stage of the project, the experimental tests were performed with a set of model compounds, selected from among the chemicals most frequently used in the plating processes, namely chelating agents, surfactants and corrosion inhibitors. These compounds were oxidized comparatively by ozone and catalytic ozonation. The differences between standard oxidation and catalytic oxidation are presented and discussed.

Direct visualization of drug release in injectable implant by laser induced breakdown spectroscopy (LIBS)

2019 ◽  
Vol 34 (7) ◽  
pp. 1351-1354 ◽  
Author(s):  
Lanfang Zou ◽  
Mallory J. Stenslik ◽  
Morgan B. Giles ◽  
James D. Ormes ◽  
Maureen Marsales ◽  
...  
Keyword(s):  
Drug Release ◽  
Laser Induced Breakdown Spectroscopy ◽  
Imaging Method ◽  
Direct Visualization ◽  
Release Process ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
2D Imaging ◽  
Long Acting ◽  
First Time

A novel laser induced breakdown spectroscopy (LIBS) 2D imaging method is used to directly visualize the drug release process of long-acting injectable (LAI) implants for the first time.

scholarly journals The Plasma Spectroscopic Study of Dergaon Meteorite, India

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 984
Author(s):  
Abhishek K. Rai ◽  
Jayanta K. Pati ◽  
Christian G. Parigger ◽  
Sonali Dubey ◽  
Awadhesh K. Rai ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Atomic Emission ◽  
Spectral Signatures ◽  
Planetary Evolution ◽  
Breakdown Spectroscopy ◽  
The Earth ◽  
Laser Induced Breakdown ◽  
First Time ◽  
Dergaon Meteorite

Meteorites are the recoverable portions of asteroids that reach the surface of the Earth. Meteorites are rare extraterrestrial objects studied extensively to improve our understanding of planetary evolution. In this work, we used calibration-free laser-induced breakdown spectroscopy (CF-LIBS) to evaluate the quantitative elemental and molecular analyses of the Dergaon meteorite, a H 4-5 chondrite fall sample from Assam, India. Spectral signatures of H, N, O, Na, Mg, Al, Si, P, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, andIrweredetected. Along with the atomic emission, this work reports the molecular emission from FeO molecules. The concentration of the measured elements obtained using CF-LIBS is in close agreement with earlier reports. The elements H, N, and O and their concentrations are estimated by using CF-LIBS for the first time. This study applies laser spectroscopy to establish the presence of Ni, Cr, Co, and Ir in meteorites. The elemental analysis forms the basis for the establishment of the potential molecular composition of the Dergaon meteorite. Moreover, the elemental analysis approach bodes well for in-situ analyses of extraterrestrial objects including applications in planetary rover missions.

scholarly journals Mg/Ca ratios measured by laser induced breakdown spectroscopy (LIBS): a new approach to decipher environmental conditions

2015 ◽  
Vol 30 (9) ◽  
pp. 1913-1919 ◽  
Author(s):  
A. García-Escárzaga ◽  
S. Moncayo ◽  
I. Gutiérrez-Zugasti ◽  
M. R. González-Morales ◽  
J. Martín-Chivelet ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Laser Induced Breakdown Spectroscopy ◽  
New Approach ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Mollusc Species ◽  
First Time ◽  
Environmental Proxy

Mg/Ca ratios in shells of the mollusc species Phorcus lineatus obtained using the LIBS technique has been evaluated as an environmental proxy to reconstruct paleotemperatures and season of capture of molluscs for the first time.

Multiplexing Steganography Based on Laser-Induced Breakdown Spectroscopy Coupled with Machine Learning

2021 ◽  
Author(s):  
Pengkun Yin ◽  
Enlai Yang ◽  
Youyuan Chen ◽  
Zhengying Peng ◽  
Dan Li ◽  
...  
Keyword(s):  
Machine Learning ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
First Time

This study proposed steganography based on laser-induced breakdown spectroscopy (LIBS) for the first time. LIBS inks containing different elements with varying concentrations were fabricated to write steganographic text. LIBS combined...

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