کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1199829 1493566 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fluorous receptor-facilitated solid phase microextraction
ترجمه فارسی عنوان
میکروکاکساکتیو فاز جامد تسهیل کننده فلوئور
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• The first reported receptor-doped fluorous SPME.
• Showed high selectivity for an environmental pollutant.
• Designed in both 96-well vessel SPME and the coated fiber SPME formats.
• The design uses GC or optical concentration measurement.
• Theoretical model to explain concentration dependence of distribution coefficient.

Solid phase microextraction (SPME) is a widely accepted solvent-free extraction technique that usually uses a polymer sorbent as the extraction phase. In this work, we have developed receptor-doped fluorous films for solid phase microextraction. The hydrophobic and lipophobic properties of the fluorous films in principle reduce the polymer–water distribution coefficients of solutes other than those that can form noncovalent interactions with the fluorous receptor. This strategy should improve extraction selectivity. We found that the addition of a fluorous carboxylic acid (Krytox 157 FSH) to a fluorous film (Teflon AF 2400) increased the polymer–water distribution coefficients of quinoline, a nitrogen heterocycle. We studied the effects of receptor concentration and solute concentration on the distribution coefficients based on 96-well vessel SPME. We then coated this receptor doped fluorous polymer on a stainless steel fiber for SPME. Compared to a commonly used SPME fiber made of polydimethylsiloxane (PDMS), it showed a preference for the nitrogen heterocyclic compound over a non-heterocyclic control, phenol. To our knowledge, this is the first reported receptor-doped fluorous SPME.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1360, 19 September 2014, Pages 17–22
نویسندگان
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