Acta Optica Sinica, Volume. 34, Issue 3, 330004(2014)
Research on Raman Spectral Characteristics and Mechanism of Ammonium Sulfate Solution
Raman spectral characteristics of ammonium sulfate solution are studied experimentally and several typical Raman peaks of SO2-4 in ammonium sulfate solution are obtained. There is a linear relationship between the concentration of SO2-4 and the corresponding Raman peak intensity. A relational database between the Raman spectral parameters and the ion concentrations is built according to the experimental results. In order to validate the experimental results, the geometry of SO2-4 is optimized and the vibrational frequency of the ions is calculated by Gaussian 03 and Hartree-Fock methods (ab initio calculation). Through the comparison between the theoretical vibrational frequency and the experimental results, it is found that the experimental results and the theoretical calculations coincide quite well. The results confirm the feasibility of Raman spectroscopy for the quantitative analysis of ammonium sulfate. It also has some reference value on identifying ammonium category, measuring different salt content precisely, producing ammonium salt and so on.
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Sun Song, Cai Tingdong, Liu Ying, Wang Jingjing, Ye Yong, Chen Shanghai. Research on Raman Spectral Characteristics and Mechanism of Ammonium Sulfate Solution[J]. Acta Optica Sinica, 2014, 34(3): 330004
Category: Spectroscopy
Received: Sep. 29, 2013
Accepted: --
Published Online: Feb. 26, 2014
The Author Email: Song Sun (ssongxz@126.com)