کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1168414 960588 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experiments on moving interaction boundaries and their characteristics of focusing and probing of both guest and host target molecules
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Experiments on moving interaction boundaries and their characteristics of focusing and probing of both guest and host target molecules
چکیده انگلیسی

In this paper, the concept of a moving interaction boundary (MIB) is proposed with regard to guest and host molecules. With 2-naphthalene-sulfonate (2-NS) and β-cyclodextrin (CD) as the model guest and host compounds, respectively, the relevant experiments were carried out on the MIB in capillary electrophoresis (CE). The experiments show that (1) there are a MIB and a complex boundary (CB) if proper guest and host molecules are used; (2) the MIB system has the characteristic of selective focusing and probing of the target 2-NS; (3) the system also has the characteristic of selective probing of the target host molecule β-CD without UV-absorbance, making the direct UV determination of β-CD from other CDs possible; (4) interestingly, the focusing of the guest molecule is a kind of leaky-sample stacking rather than a collection of analytes in sample sweeping; (5) the mechanism of MIB-induced separation of target analyte from unwanted ones is similar to but different from that of an affinity chromatography. In addition, the utility of MIB was briefly tested for a real sample of wastewater spiked with 2-NS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 650, Issue 1, 14 September 2009, Pages 111–117
نویسندگان
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