Journal
CHEMICAL ENGINEERING JOURNAL
Volume 283, Issue -, Pages 243-250Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.07.061
Keywords
Microcapillary film; Photoreactor; Direct photolysis; Caffeine; Benzoylecgonine; Cocaine metabolite
Categories
Ask authors/readers for more resources
Benzoylecgonine (BE) is the major metabolite of cocaine and a contaminant of emerging concern often detected in sewage treatment plant (STP) effluents and surface waters. In this study, an innovative microcapillary film (MCF) array photoreactor made of fluoropolymer material was used to determine the direct photolysis quantum yield at 254 nm of benzoylecgonine. The photolysis quantum yield of BE was found to be (6.22 +/- 0.19) . 10(-3) mol ein(-1). The proposed methodology was validated by estimating the quantum yield of caffeine (7.48 +/- 0.64) 10(-4) mol ein(-1), which was found in agreement with results published in literature. The MCF uses a very small sample volume (in the order of 330 mu L per meter length of material) and allows extremely rapid photolysis with a short contact time ranging from a fraction of seconds to few minutes. The novel microfluidic-based approach presented in this study is particularly useful for determining the photochemical behavior of highly priced pharmaceuticals, illicit drugs, metabolites and uncommon or regulated substances. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available