کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6318372 | 1619186 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Homologue specific analysis of a polyether trisiloxane surfactant in German surface waters and study on its hydrolysis
ترجمه فارسی عنوان
تجزیه و تحلیل خاصی از یک پلی اتر تری سیلکسان سورفاکتانت در آب های سطح آب آلمان و بررسی هیدرولیز آن
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
The occurrence of a polyether trisiloxane surfactant in the ng Lâ1 range in German surface waters is reported for the first time. The studied surfactant does not ubiquitously occur in the aquatic environment but can reach surface waters on a local scale. As a first step towards the understanding of the environmental fate, the hydrolysis was studied according to the OECD guideline 111. It confirmed that the trisiloxane surfactant is sensitive to hydrolysis and that the hydrolysis rate strongly depends on the pH and the temperature. If one takes only into account the hydrolysis, the trisiloxane surfactant could persist several weeks in river water (the half-life in water is approximately 50 days at pH 7, 25 °C, and an initial concentration of 2 mg Lâ1). A degradation product, more polar than the initial trisiloxane surfactant, was identified by high resolution mass spectrometry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 186, March 2014, Pages 126-135
Journal: Environmental Pollution - Volume 186, March 2014, Pages 126-135
نویسندگان
Amandine Michel, Heinz-Jürgen Brauch, Eckhard Worch, Frank T. Lange,