Potentialities of a Laser-Induced Breakdown Spectroscopy Technique in the Study of Polymer Composites

A laser-induced breakdown spectroscopy (LIBS) technique was used to evaluate the filler content in particulate epoxy–copper composites. A potential application for a direct and fast measurement of the filler in composites through the LIBS results is suggested using calibrated samples. The methodology used in this work makes possible the incorporation of LIBS as a quantitative technique for the study of particle metal-filled epoxy composites, providing a method to obtain a direct estimation of the filler volume fraction.

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APPLICATION OF THE LASER INDUCED BREAKDOWN SPECTROSCOPY TECHNIQUE TO THE DETECTION OF Cl IN CHARD TO INFER THE PRESENCE OF PESTICIDES

Anales AFA ◽

10.31527/analesafa.2020.31.4.135 ◽

2021 ◽

Vol 31 (4) ◽

pp. 135-138

Author(s):

L.J. Martino ◽

◽

C. A. D’Angelo ◽

Keyword(s):

Pesticide Residues ◽

Potential Application ◽

Control Sample ◽

Laser Induced Breakdown Spectroscopy ◽

Spectroscopy Technique ◽

Breakdown Spectroscopy ◽

Rapid Measurement ◽

Laser Induced Breakdown ◽

Food Matrices ◽

Potential Tool

Pesticide residues in food are a threat to consumption. However, detecting residues quickly and directly on the sample is a complex job. In this work, the potential application of the Laser Induced Breakdown Spectroscopy (LIBS) technique for the rapid measurement of pesticide residues (imidacloprid, cypermethrin and chlorpyrifos) in chard leaves is explored by registering the chlorine emission line (725.66 nm). Significant differences can be observed with respect to the control sample, evidencing the applicability of this technique as a potential tool for the study of pesticide residues in food matrices.

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Detecting Dust on Plasma-Facing Components in a Next-Step Tokamak Using a Laser-Induced Breakdown Spectroscopy Technique

Fusion Science & Technology ◽

10.13182/fst02-a198 ◽

2002 ◽

Vol 41 (1) ◽

pp. 32-43 ◽

Cited By ~ 12

Author(s):

Gennadij T. Razdobarin ◽

Gianfranco Federici ◽

Vladimir M. Kozhevin ◽

Eugeny E. Mukhin ◽

Vladimir V. Semenov ◽

...

Keyword(s):

Laser Induced Breakdown Spectroscopy ◽

Spectroscopy Technique ◽

Breakdown Spectroscopy ◽

Plasma Facing Components ◽

Laser Induced Breakdown

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A Quick Classifying Method for Tracking and Erosion Resistance of HTV Silicone Rubber Material via Laser-Induced Breakdown Spectroscopy

Sensors ◽

10.3390/s19051087 ◽

2019 ◽

Vol 19 (5) ◽

pp. 1087 ◽

Cited By ~ 3

Author(s):

Ping Chen ◽

Xilin Wang ◽

Xun Li ◽

Qishen Lyu ◽

Naixiao Wang ◽

...

Keyword(s):

Silicone Rubber ◽

Erosion Resistance ◽

Performance Enhancement ◽

Filler Content ◽

Principal Component ◽

Laser Induced Breakdown Spectroscopy ◽

Rubber Material ◽

Breakdown Spectroscopy ◽

Laser Induced Breakdown ◽

Resistance Performance

Silicone rubber material is widely used in high-voltage external insulation systems due to its excellent hydrophobicity and hydrophobicity transfer performance. However, silicone rubber is a polymeric material with a poor ability to resist electrical tracking and erosion; therefore, some fillers must be added to the material for performance enhancement. The inclined plane test is a standard method used for evaluating the tracking and erosion resistance by subjecting the materials to a combination of voltage stress and contaminate droplets to produce failure. This test is time-consuming and difficult to apply in field inspection. In this paper, a new and faster way to evaluate the tracking and erosion resistance performance is proposed using laser-induced breakdown spectroscopy (LIBS). The influence of filler content on the tracking and erosion resistance performance was studied, and the filler content was characterized by thermogravimetric analysis and the LIBS technique. In this paper, the tracking and erosion resistance of silicone rubber samples was correctly classified using principal component analysis (PCA) and neural network algorithms based on LIBS spectra. The conclusions of this work are of great significance to the performance characterization of silicone rubber composite materials.

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