کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7613722 1493597 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction and derivatization of chemical weapons convention relevant aminoalcohols on magnetic cation-exchange resins
ترجمه فارسی عنوان
استخراج و مشتق زدن اسید آمینه های شیمیایی مربوط به سلاح شیمیایی در رزین های وابسته به کاتیون مغناطیسی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Analysis and identification of nitrogen containing aminoalcohols is an integral part of the verification analysis of chemical weapons convention (CWC). This study was aimed to develop extraction and derivatization of aminoalcohols of CWC relevance by using magnetic dispersive solid-phase extraction (MDSPE) in combination with on-resin derivatization (ORD). For this purpose, sulfonated magnetic cation-exchange resins (SMRs) were prepared using magnetite nanoparticles as core, styrene and divinylbenzene as polymer coat and sulfonic acid as acidic cation exchanger. SMRs were successfully employed as extractant for targeted basic analytes. Adsorbed analytes were derivatized with hexamethyldisilazane (HMDS) on the surface of extractant. Derivatized (silylated) compounds were analyzed by GC-MS in SIM and full scan mode. The linearity of the method ranged from 5 to 200 ng mL−1. The LOD and LOQ ranged from 2 to 6 ng mL−1 and 5 to 19 ng mL−1 respectively. The relative standard deviation for intra-day repeatability and inter-day intermediate precision ranged from 5.1% to 6.6% and 0.2% to 7.6% respectively. Recoveries of analytes from spiked water samples from different sources varied from 28.4% to 89.3%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1329, 14 February 2014, Pages 10-16
نویسندگان
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