Raman sensitivity enhancement for aqueous absorbing sample using Teflon-AF 2400 liquid core optical fibre cell

被引：25

作者：

Tian, Yanjie ^{[1
]}

Zhang, Liuyang ^{[1
]}

Zuo, Jian ^{[1
]}

Li, Zuowei ^{[1
]}

Gao, Shuqin ^{[1
]}

Lu, Guohui ^{[1
]}

机构：

[1] Jilin Univ, Coll Phys, Key Lab Coherent Light Atom & Mol Spect, Educ Minist China, Changchun 130023, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2007年 / 581卷 / 01期

关键词：

Teflon-AF; liquid core optical fibre; resonance Raman spectroscopy; aqueous solution;

D O I：

10.1016/j.aca.2006.07.082

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 x 10(-9) and 2.5 x 10(-10) M aqueous beta-carotene using 16.2 mW of laser power and 10 s integration time. This volume of a 2.5 x 10(-10) M aqueous solution corresponds to only 1.5 fmol or 830 fg of beta-carotene. The results of this preliminary study indicate that RRS-LCOF has potential in bioanalytical and biomedical applications. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：154 / 158

页数：5

共 19 条

[1] Intensity considerations in liquid core optical fiber Raman spectroscopy [J].