کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6326907 1619761 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fate of trace organics in a wastewater effluent dependent stream
ترجمه فارسی عنوان
سرنوشت آلیدهای ردیابی در یک جریان وابسته به پساب فاضلاب
کلمات کلیدی
ردیابی ترکیبات ارگانیک، فعالیت استروژنیک، فوتولیز خورشیدی، جریان وابسته به فاضلاب،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Trace organic compounds (TOrCs) in municipal wastewater effluents that are discharged to streams are of potential concern to ecosystem and human health. This study examined the fate of a suite of TOrCs and estrogenic activity in water and sediments in an effluent-dependent stream in Tucson, Arizona. Sampling campaigns were performed during 2011 to 2013 along the Lower Santa Cruz River, where TOrCs and estrogenic activity were measured in aqueous (surface) and solid (riverbed sediment) phases. Some TOrCs, including contributors to estrogenic activity, were rapidly attenuated with distance of travel in the river. Those TOrCs that are not sufficiently attenuated and percolate to ground water have in common low biodegradation probabilities and low octanol-water distribution ratios. Independent experiments showed that attenuation of estrogenic compounds may be due in part to indirect photolysis caused by formation of organic radicals from sunlight absorption. Hydrophobic TOrCs may accumulate in riverbed sediments during dry weather periods, but riverbed sediment quality is periodically affected through storm-related scouring during periods of heavy rainfall and runoff. Taken together, evidence suggests that natural processes can attenuate at least some TOrCs, reducing potential impacts to ecosystem and human health.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 518–519, 15 June 2015, Pages 479-490
نویسندگان
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