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学科主题: 临床医学
题名:
Using Barium Fluoride Fine Particles as Stationary Phase for TLC/FTIR Analysis
作者: Liu Xi1,2; Pan Qing-hua2; Ding Jie2,3; Zhu Qing1,2; He An-qi2; Yue Shi-juan2,4; Li Xiao-pei2,4; Hu Li-ping1; Xia Jin-ming5; Liu Cui-ge4; Wei Yong-ju4; Yu Jiang3; Yang Zhan-lan2; Zhu Xi6; Xu Yi-zhuang2; Wu Jin-guang2
关键词: In situ ; TLC ; FUR ; Couple with ; Barium fluoride
刊名: SPECTROSCOPY AND SPECTRAL ANALYSIS
发表日期: 2011-07-01
DOI: 10.3964/j.issn.1000-0593(2011)07-1767-05
卷: 31, 期:7, 页:1767-1771
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
关键词[WOS]: PLANAR CHROMATOGRAPHY ; THIN-LAYER
英文摘要:

In situ TLC/FIR technique has tremendous potential in the analysis of complex mixtures. However, the progress in this technique was quite slow. The reason is that conventional stationary phase such as silica gel etc. has strong absorption in FTIR spectrum and thus brings about severe interference in the detection of samples. To solve the problem, the authors propose to use barium fluoride fine particles as stationary phase of TLC plate. The reasons are as follows: Barium fluoride wafer has been extensively used as infrared window in FTIR experiments and it has no absorbance in an IR region between 4 000 and 800 cm(-1). As a matter of fact, the atomic mass of barium and fluoride is quite large, thus the normal vibration of BaF(2) lattice is limited in far-IR region and low frequency part of mid-IR region. Therefore, the interference caused by IR absorption of stationary phase can be resolved if BaF(2) is used as stationary phase of TLC plate. Moreover, BaF(2) is quite stable and insolvable in water and most organic solvents and it will not be dissolved by mobile phase or react with samples in TLC separation. Additionally, decreasing the particle size of BaF(2) is very important in TLC/FTIR analysis technique. The reason is two-fold: First, decreasing the particle size of stationary phase is helpful to improving the efficiency of separation by TLC plate; second, decreasing the size of BaF(2) particle can improve the quality of FTIR spectra by alleviating the problem of light scattering. By optimizing the synthetic conditions, fine particles of barium fluoride were obtained. SEM results indicate that the size of the BaF(2) particles is around 500 nm. FUR spectrum of the BaF(2) particles shows that no absorption of impurity was observed. Moreover, the elevation of baseline caused by light scattering is insignificant. The authors have developed a new technique named "settlement volatilization method" to prepare TLC plate without polymeric adhesive that may bring about significant interference in FTIR analysis. Preliminary TLC experiments proved that the TLC plate using BaF(2) fine particles as stationary phase can separate rhodamine B from methylene blue successfully. Applications of barium fluoride fine particles as stationary phase have bright perspective in the development of new in-situ TLC/FTIR analysis techniques.

语种: 中文
WOS记录号: WOS:000292575600009
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51052
Appears in Collections:北京大学第三临床医学院_危重医学科_期刊论文

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作者单位: 1.Shenyang Dootel Biopharmaceut Res Ctr, Shenyang 110031, Peoples R China
2.Liaoning Univ Tradit Chinese Med, Coll Pharm, Shenyang 110032, Peoples R China
3.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
4.Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
5.Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050016, Peoples R China
6.Peking Univ, Hosp 3, Intens Care Unit, Beijing 110083, Peoples R China

Recommended Citation:
Liu Xi,Pan Qing-hua,Ding Jie,et al. Using Barium Fluoride Fine Particles as Stationary Phase for TLC/FTIR Analysis[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2011,31(7):1767-1771.
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