Spectrophotometric determination of ozone in the highly concentrated ozone solutions

Авторы: Panich N.M., Ershov B.G.
Сборник: XXI Mendeleev Congress on General and Applied chemistry. . Book of abstracts
Серия: МЕНДЕЛЕЕВСКИЙ СЪЕЗД
Том: 4
Тезисы
Год издания: 2019
Место издания: Saint Petersburg
Первая страница: 352
Последняя страница: 352
Аннотация: The concentrated ozone solutions in organic solvents have been used to demonstrate the possibility of applying the spectrophotometric method to measure ozone concentration in the visible region (the Chappuis optical zone) at ~600nm directly in the liquid phase2-4. The transition of ozone from the gaseous to the dissolved state is accompanied by a sharp increase in the absorbance in the visible (Chappuis) region; the ratio max (UV)/max (Vis) decreased for the organic liquids and aqueous solutions. The molar absorption coefficients of ozone at max in the Chappuis band have been determined (table). The dependence of the coefficient of molar absorption of the long-wave ozone band on the nature of the solvent has been established. The heat of ozone dissolution has been determined from the slope of the Arrhenius dependence (ln —1/T). The limiting solubility of ozone in these solvents (at an ozone pressure of 760 mm Hg) has been calculated.
Добавил в систему: Панич Надежда Михайловна

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