کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7612847 | 1493569 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Supported liquid membrane-protected molecularly imprinted beads for micro-solid phase extraction of sulfonamides in environmental waters
ترجمه فارسی عنوان
دانه های تقویت شده با غشاء مایع حمایت شده برای استخراج فاز میکرو جامد از سولفونامید ها در آب های محیطی
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کلمات کلیدی
سولفونامیدها، نمونه های آب استخراج فاز میکرو جامد، غشای مایع حمایت شده، الیاف توخالی، پلیمرهای چاپ شده
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
In this work, molecularly imprinted polymer (MIP) beads have been prepared and evaluated for the development of a supported liquid membrane-protected micro-solid phase extraction method for the analysis of sulfonamides (SAs) in aqueous samples. The performance of MIP beads was firstly evaluated in cartridges by conventional solid-phase extraction for the simultaneous analysis of SAs. Afterward, beads were packed into a polypropylene hollow fiber protected by an organic solvent immobilized in the pores of the capillary wall. During the process, the analytes were extracted from the aqueous sample to the immobilized organic solvent and then selectively retained by the MIP beads located inside the capillary. The effect of various experimental parameters as sample pH, time and stirring-rate among others, were studied for the establishment of optimum rebinding conditions. Relative recoveries for all sulfonamides tested in river and reservoir water samples by the proposed method using 100 mL water sample spiked with 50 μg L-1 of each sulfonamide were within 70-120%, with a relative standard deviation (RSD) <10% (n = 3). The detection limits (LODs) were within 0.2-3 μg Lâ1, depending upon the sulfonamide and the type of water used.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1357, 29 August 2014, Pages 158-164
Journal: Journal of Chromatography A - Volume 1357, 29 August 2014, Pages 158-164
نویسندگان
M. DÃaz-Álvarez, F. Barahona, E. Turiel, A. MartÃn-Esteban,