Quantitative analysis of thymine with surface-enhanced Raman spectroscopy and partial least squares (PLS) regression

被引:53
|
作者
Zhang, Lei [1 ,2 ]
Li, Qingqing [1 ,2 ]
Tao, Wei [1 ,2 ]
Yu, Bohao [1 ,2 ]
Du, Yiping [1 ,2 ]
机构
[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China
[2] E China Univ Sci & Technol, Res Ctr Anal Test, Shanghai 200237, Peoples R China
基金
中国国家自然科学基金;
关键词
SERS; Thymine; Stable medium; Polyacrylic acid sodium; SILVER NANOPARTICLES; SCATTERING; SPECTRA; ELECTRODE; MOLECULES; DIMERS; SERS;
D O I
10.1007/s00216-010-4074-0
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Silver sol surface-enhanced Raman spectroscopy (SERS) was considered as a technique in the quantitative analysis of low-concentration thymine. Because of the poor stability and reproducibility of SERS signal, a polymer of polyacrylic acid sodium was selected as a stable medium to add into silver sol in order to obtain a surface-enhanced Raman spectroscopy signal. Assignments of Raman shift for solid thymine, SERS of thymine, and SERS of thymine containing stable medium were given. The comparison of Raman peaks between them showed that the addition of stable medium had a little influence on the SERS of thymine and is suitable for the quantitative analysis of low-concentration thymine.
引用
收藏
页码:1827 / 1832
页数:6
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