کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1199503 1493552 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective separation of fluorinated compounds from complex organic mixtures by pyrolysis-comprehensive two-dimensional gas chromatography coupled to high-resolution time-of-flight mass spectrometry
ترجمه فارسی عنوان
جداسازی انتخابی از ترکیبات فلوراید شده از ترکیبات آلی پیچیده توسط کروماتوگرافی گاز دو بعدی جامد پیلوریس، همراه با طیف سنجی جرمی با طول عمر بالا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Py-GC × GC/HRTOF-MS effectively characterized fluorinated polymer structures.
• GC × GC selectively separated the fluorinated compounds.
• Fluorohydrocarbon retention times were ordered by fluorine content and chain length.
• 6:2 FTOH and FA monomer were separated from hydrocarbons.
• A reliable structural analysis was conducted by GC × GC positions with HRTOF-MS.

The usefulness of comprehensive two-dimensional gas chromatography (GC × GC) was demonstrated for the selective separation of fluorinated compounds from organic mixtures, such as kerosene/perfluorokerosene mixtures, pyrolysis products derived from polyethylene/ethylene-tetrafluoroethylene alternating copolymer mixture and poly[2-(perfluorohexyl)ethyl acrylate]. Perfluorocarbons were completely separated from hydrocarbons in the two-dimensional chromatogram. Fluorohydrocarbons in the pyrolysis products of polyethylene/ethylene-tetrafluoroethylene alternating copolymer mixture were selectively isolated from their hydrocarbon counterparts and regularly arranged according to their chain length and fluorine content in the two-dimensional chromatogram. A reliable structural analysis of the fluorohydrocarbons was achieved by combining effective GC × GC positional information with accurate mass spectral data obtained by high-resolution time-of-flight mass spectrometry (HRTOF-MS). 2-(Perfluorohexyl)ethyl acrylate monomer, dimer, and trimer as well as 2-(perfluorohexyl)ethyl alcohol in poly[2-(perfluorohexyl)ethyl acrylate] pyrolysis products were detected in the bottommost part of the two-dimensional chromatogram with separation from hydrocarbons possessing terminal structure information about the polymer, such as α-methylstyrene. Pyrolysis-GC × GC/HRTOF-MS appeared particularly suitable for the characterization of fluorinated polymer microstructures, such as monomer sequences and terminal groups.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1374, 29 December 2014, Pages 231–237
نویسندگان
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