کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6583581 456359 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct photolysis of benzoylecgonine under UV irradiation at 254 nm in a continuous flow microcapillary array photoreactor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Direct photolysis of benzoylecgonine under UV irradiation at 254 nm in a continuous flow microcapillary array photoreactor
چکیده انگلیسی
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 μL 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 283, 1 January 2016, Pages 243-250
نویسندگان
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