3 May 2004 Study of cresol phototransformations in neutral and acidic medium
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Proceedings Volume 5483, Atomic and Molecular Pulsed Lasers V; (2004) https://doi.org/10.1117/12.562977
Event: Atomic and Molecular Pulsed Lasers V, 2003, Tomsk, Russian Federation
Abstract
It is well known that pH value and excitation energy have a directly impact on photolysis rate of phenols under Hg-lamp irradiation and oxidation process. The purpose of the current study is the research of o-cresol and para-cresol photolysis in acidic medium under various spontaneous radiation sources irradiation. Photochemical degradation was carried out through a high pressure mercury lamp OΚH-11M, and also with a new capacitive discharge excilamps on working molecules KrCl* (λ~222 nm) and XeBr* (λ~283 nm). Exposure time was varied from 1 to 40 minutes that corresponds radiation doses from 0.5 to 20 J/cm2. A comparison between phototransformations under different light excitation shows that cresol aqueous solutions acidation leads to increase of phototransformations efficiency. It was been found that both in neutral, and in acidic medium the photodecomposition of cresols is carried out more effectively under KrCl-excilamp irradiation.
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T. V. Sokolova, T. V. Sokolova, Irina V. Sokolova, Irina V. Sokolova, Edward A. Sosnin, Edward A. Sosnin, Olga N. Tchaikovskaya, Olga N. Tchaikovskaya, } "Study of cresol phototransformations in neutral and acidic medium", Proc. SPIE 5483, Atomic and Molecular Pulsed Lasers V, (3 May 2004); doi: 10.1117/12.562977; https://doi.org/10.1117/12.562977
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