Photoacoustic spectra of malachite green adsorbed on silica gel surface

Anna Sikorska; Stanislaw Zachara

doi:10.1117/12.131937

25 November 1992 Photoacoustic spectra of malachite green adsorbed on silica gel surface

Anna Sikorska, Stanislaw Zachara

Proceedings Volume 1844, Acousto-Optics and Applications; (1992) https://doi.org/10.1117/12.131937
Event: Acousto-Optics and Applications, 1992, Gdansk-Jurata, Poland

Abstract

Photoacoustic spectra of malachite green adsorbed on silica gel were investigated at high dye concentrations. The measurements were carried out for two markedly differing layer thicknesses of dyed silica. The ratio of maxima of two characteristic dye bands at (lambda) equals 620 nm and (lambda) equals 425 nm was chosen as an indicator of concentration dependent changes in the shapes of the photoacoustic spectra investigated. The comparison of experimental data with the theoretical model implies that the changes observed in the shape of the spectrum result first of all from the mechanism of the signal generation in inhomogeneous medium.

Citation Download Citation

Anna Sikorska and Stanislaw Zachara "Photoacoustic spectra of malachite green adsorbed on silica gel surface", Proc. SPIE 1844, Acousto-Optics and Applications, (25 November 1992); https://doi.org/10.1117/12.131937

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