کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4433355 1619954 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Destruction of estrogenic activity in water using UV advanced oxidation
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Destruction of estrogenic activity in water using UV advanced oxidation
چکیده انگلیسی

The transformation of the steroidal Endocrine Disrupting Compounds (EDCs), 17-β-estradiol (E2) and 17-α-ethinyl estradiol (EE2) by direct UV photolysis and UV/H2O2 advanced oxidation was studied from the perspective of the removal of estrogenic activity associated with the compounds. First, experiments were performed to link the oxidation of E2 and EE2 with subsequent reduction in estrogenic activity. No statistically significant difference between removal rates was observed, implying that the oxidation products of E2 and EE2 are not as estrogenic (measured by the Yeast Estrogen Screen (YES)) as the parent compounds. Utilizing the YES, 90% removal of estrogenic activity of E2 and EE2 at environmentally relevant concentrations (∼ 3 μg L− 1) was achieved using a combination of 5 mg L−1 H2O2 and a UV fluence of less than 350 mJ cm− 2. Thus, these compounds, when considered at environmentally relevant levels, are significantly degraded at much lower UV fluences than previously thought. A steady state OH radical model was used to predict oxidation of EE2 in laboratory and natural waters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 377, Issue 1, 1 May 2007, Pages 105–113
نویسندگان
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