کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1207801 1645348 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Innovative sol–gel coatings for solid-phase microextraction: Development of fibers for the determination of polycyclic aromatic hydrocarbons at trace level in water
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Innovative sol–gel coatings for solid-phase microextraction: Development of fibers for the determination of polycyclic aromatic hydrocarbons at trace level in water
چکیده انگلیسی

Innovative solid-phase microextraction coatings synthesized by sol–gel technology were developed for the determination of environmental pollutants, i.e. polycyclic aromatic hydrocarbons at trace level in water. The fibers obtained, based on the use of (3-aminopropyl)triethoxysilane and diethoxydiphenylsilane were characterised in terms of film thickness, porosity, thermal stability and pH resistance. An excellent thermal stability was obtained in the case of diethoxydiphenylsilane-based coating, with a negligible weight loss until 400 °C. A very good fiber-to-fiber and batch-to-batch repeatability was also obtained with RSD lower than 6% using a mixture of aromatic hydrocarbons in the low ng/l range. Finally, the capabilities of the developed coating for sampling polycyclic aromatic hydrocarbons in water at trace levels were proved obtaining limits of detection about twofold lower than those achieved by using the commercially available polydimethylsiloxane 7 μm fiber.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volumes 1196–1197, 4 July 2008, Pages 15–22
نویسندگان
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