کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1171557 960724 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Raman sensitivity enhancement for aqueous absorbing sample using Teflon-AF 2400 liquid core optical fibre cell
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Raman sensitivity enhancement for aqueous absorbing sample using Teflon-AF 2400 liquid core optical fibre cell
چکیده انگلیسی

The compatibility Teflon-AF 2400 liquid core optical fibre with resonance Raman spectroscopy (RRS-LCOF) was used to detect aqueous biomolecules. The maximum sensitivity enhancement factor for concentrations greater than the detection limit in a conventional cell was 10, and detection limit reduction of about 1000-fold have been achieved for the measurement of aqueous absorbing sample using Teflon-AF 2400 fibre Raman cell compared to the conventional cell. We were able to collect spectra of 2.5 × 10−9 and 2.5 × 10−10 M aqueous β-carotene using 16.2 mW of laser power and 10 s integration time. This volume of a 2.5 × 10−10 M aqueous solution corresponds to only 1.5 fmol or 830 fg of β-carotene. The results of this preliminary study indicate that RRS-LCOF has potential in bioanalytical and biomedical applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 581, Issue 1, 2 January 2007, Pages 154–158
نویسندگان
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