Тип публикации: статья из журнала
Год издания: 2017
Идентификатор DOI: 10.1007/s10812-017-0485-4
Ключевые слова: light scattering, methylene blue, non-destructive testing, photoacoustic spectroscopy, titanium dioxide
Аннотация: In this paper, we investigated the features of photoacoustic phenomena induced by the second harmonic of YAG:Nd3+ laser pulses (532 nm) in a methylene blue solution in a water/glycerol (1:1) mixture containing titanium dioxide nanoparticles as the light-scattering component. Using stationary spectroscopy, it was found that the dimeПоказать полностьюrization degree of methylene blue is substantially lower in this solvent than in water. The dependencies of the signal amplitude normalized to the pulse energy density and of the effective signal rise constant on the methylene blue and titanium dioxide nanoparticle concentrations were obtained. It is shown that the signal rise constant depends linearly on the concentration of titanium dioxide nanoparticles, while the amplitude is almost independent. A method is suggested for simultaneous photoacoustic determination of concentrations of both components. For testing samples, the uncertainty of the determination of the components concentration is less than 5% for methylene blue and less than 37% for titanium dioxide. © 2017, Springer Science+Business Media, LLC.
Журнал: Journal of Applied Spectroscopy
Выпуск журнала: Vol. 84, Is. 3
Номера страниц: 413-419
ISSN журнала: 00219037
Издатель: Springer New York LLC