dor_id: 41731

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856.4.0.u: http://revistas.unam.mx/index.php/rmf/article/view/30596/28422

100.1.#.a: Díaz-reyes, J.; Balderas López, J. A.

524.#.#.a: Díaz-reyes, J., et al. (2011). Photoacoustic technique in the transmission configuration for quantitative analysis of liquids. Revista Mexicana de Física; Vol 57, No 005. Recuperado de https://repositorio.unam.mx/contenidos/41731

245.1.0.a: Photoacoustic technique in the transmission configuration for quantitative analysis of liquids

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Facultad de Ciencias, UNAM

264.#.0.c: 2011

264.#.1.c: 2011-01-01

653.#.#.a: Photoacoustic; optical; absorption; thermal; diffusivity

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2011-01-01, para un uso diferente consultar al responsable jurídico del repositorio por medio de rmf@ciencias.unam.mx

884.#.#.k: http://revistas.unam.mx/index.php/rmf/article/view/30596

041.#.7.h: eng

520.3.#.a: A photoacoustic methodology for the measurement of optical absorption coefficient for pigments in liquid solution is introduced. The mathematical model, involving the Beer-Lambert model for light absorption, is a generalization of a previously reported photoacoustic methodology, involving a surface absorption model, used for thermal diffusivity measurements of liquids. The optical absorption coefficient for aqueous solutions of copper sulfate and methylene blue at various concentrations where measured at a wave-length of 658 nm, to show the range of optical absorption coefficients where the Beer-Lambert model for light absorption applies. It was experimentally shown that at high pigment’s concentrations the surface absorption limit is more adequate and, consequently, the sample’s thermal diffusivity is obtained instead of the optical absorption coefficient. Optical and thermal properties obtained by means of this photoacoustic methodology resulted in close agreement with the corresponding ones obtained by means of conventional optical spectroscopy and the previously reported photoacoustic methodology for thermal diffusivity measurements, respectively. Results show that this technique has promise applications in the field of quantitative analysis.

773.1.#.t: Revista Mexicana de Física; Vol 57, No 005 (2011)

773.1.#.o: http://revistas.unam.mx/index.php/rmf

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Artículo

Photoacoustic technique in the transmission configuration for quantitative analysis of liquids

Díaz-reyes, J.; Balderas López, J. A.

Facultad de Ciencias, UNAM, publicado en Revista Mexicana de Física, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Facultad de Ciencias, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Díaz-reyes, J., et al. (2011). Photoacoustic technique in the transmission configuration for quantitative analysis of liquids. Revista Mexicana de Física; Vol 57, No 005. Recuperado de https://repositorio.unam.mx/contenidos/41731

Descripción del recurso

Autor(es)
Díaz-reyes, J.; Balderas López, J. A.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Photoacoustic technique in the transmission configuration for quantitative analysis of liquids
Fecha
2011-01-01
Resumen
A photoacoustic methodology for the measurement of optical absorption coefficient for pigments in liquid solution is introduced. The mathematical model, involving the Beer-Lambert model for light absorption, is a generalization of a previously reported photoacoustic methodology, involving a surface absorption model, used for thermal diffusivity measurements of liquids. The optical absorption coefficient for aqueous solutions of copper sulfate and methylene blue at various concentrations where measured at a wave-length of 658 nm, to show the range of optical absorption coefficients where the Beer-Lambert model for light absorption applies. It was experimentally shown that at high pigment’s concentrations the surface absorption limit is more adequate and, consequently, the sample’s thermal diffusivity is obtained instead of the optical absorption coefficient. Optical and thermal properties obtained by means of this photoacoustic methodology resulted in close agreement with the corresponding ones obtained by means of conventional optical spectroscopy and the previously reported photoacoustic methodology for thermal diffusivity measurements, respectively. Results show that this technique has promise applications in the field of quantitative analysis.
Tema
Photoacoustic; optical; absorption; thermal; diffusivity
Idioma
eng
ISSN
2683-2224 (digital); 0035-001X (impresa)

Enlaces