文献类型：期刊文献

英文题名：The Study on Linear Relationship between Concentration and Surface-Enhanced Raman Spectroscopy (SERS) Signal of Thymine in Improved Ag Sol

作者：Mang Lei[1];Zhang Yu-lan[1];Zhang Wei[1];Wang Wen-ming[1];Du Yi-ping[1];Ozaki, Yukihiro[2]

机构：[1]E China Univ Sci & Technol, Ctr Anal & Test, Shanghai 200237, Peoples R China;[2]Kwansei Gakuin Univ, Sch Sci & Technol, Sanda 6691337, Japan

年份：2009

卷号：29

期号：7

起止页码：1889

外文期刊名：SPECTROSCOPY AND SPECTRAL ANALYSIS

收录：;EI(收录号：20092912195599);WOS:【SCI-EXPANDED(收录号:WOS:000267632100039)】；

语种：英文

外文关键词：Surface-enhanced Raman scattering; Thymine; Stable medium

摘要：The authors used polymer as a stable medium to protect Ag sol to get a stable signal for the unstable Ag sol. Polyacrylic acid sodium was selected as the stable medium, which had a little effect on the SERS of thymine and made the SERS, signal stable for thirty days. After aborative consideration and some trials, pyridine was picked as an internal standard for the quantitative detection of thymine. A linear correlation between the concentration of thymine and the ratio of thymine signal to pyridine signal intensity was obtained over a range of 2 x 10(-4)-1 x 10(-3) mol . L-1 with a correlation coefficient R-2 of 0.9754. The regression equation is: y = 3.143x + 0.3487. The proposed method has the potential for quantitative analysis of the trace compounds having SERS effects.