The influence of irradiation wavelength on the degradation of Bisphenol A (BPA) in water under the action of KrCl and XeBr excilamp radiation in a photoreactor is investigated. Fluorescent photoproducts of photodegradation of the investigated molecule is constructed. In the work fluorescent photoproducts are defined. In an excited state BPA exists in a dimeric form at a concentration above 0.1 mM. After excitation by an excilamp the main BPA photoproduct fluoresces in the region of 420 nm. This behavior is explained by the fact that the action of 222 nm radiation leads to accumulation of a stable photoproduct. This product is destroyed as well as BPA after 120 minutes of exposure. Under the action of XeBr excilamp radiation a very stable product is formed with fluorescence at 380 nm. In order to establish the mechanism of BPA photolysis the product using chromatomass spectrometryfurther research is needed.
The influence of Н2О2 on the degradation of 8-methoxypsoralen (8-MOP) in water-ethanol solutions under the action of KrCl and XeBr excilamp radiation in a photoreactor is investigated. A kinematic model of photodegradation of the investigated molecule is constructed. In water-ethanol solutions the addition of Н2О2 altered the mechanism of decay of 8-MOP under the action of a KrCl excilamp in comparison with irradiation by a XeBr excilamp. This behavior is explained by the fact that the action of 283 nm radiation leads to accumulation of a stable photoproduct. In order to establish the toxicity of this product further research is needed.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.