Artículo
Study of binary lead‑tin alloys using a new procedure based on calibration-free laser induced breakdown spectroscopy
Urbina Medina, Ivan Alexander
; Carneiro, Deborah D.; Rocha, Suellen; Farías, Eliel Eleutério; Bredice, Fausto Osvaldo; Palleschi, Vincenzo
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Fecha de publicación:
08/2020
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Spectrochimica Acta Part B: Atomic Spectroscopy
ISSN:
0584-8547
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The objective of this work is to present a novel procedure based on the time resolved Boltzmann plot, and theCalibration-free Laser Induced Breakdown Spectroscopy techniques, to determine the composition of the samplesby exploiting the temporal evolution of the spectral lines generated in the laser-produced plasma. As an exampleof the application of this procedure, Laser Induced Breakdown Spectroscopy spectra were acquired on binarylead – tin alloys of different composition at several delay times, from 1 to 4 μs with a step of 0.5 μs after the onsetof the plasma.The matrix change of the alloys was studied through the determination of the constants that characterize thetemporal evolution of plasma. The effects of self-absorption were also taken into account and compensated. Theapplication of the proposed method allowed us to determine the concentrations of lead (Pb) and tin (Sn) in thealloys with an error lower than 5%.
Palabras clave:
LIBS
,
Calibration free LIBS
,
3D Boltzmann plot
,
Temporal evolution
,
Pb-Sn alloys
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Articulos(CIOP)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Citación
Urbina Medina, Ivan Alexander; Carneiro, Deborah D.; Rocha, Suellen; Farías, Eliel Eleutério; Bredice, Fausto Osvaldo; et al.; Study of binary lead‑tin alloys using a new procedure based on calibration-free laser induced breakdown spectroscopy; Pergamon-Elsevier Science Ltd; Spectrochimica Acta Part B: Atomic Spectroscopy; 170; 105902; 8-2020; 1-22
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