Related Experiment Video
Updated: Jun 9, 2026

UV-Vis Spectroscopic Characterization of Nanomaterials in Aqueous Media
Published on: October 25, 2021
[Comparative study on UV fluorescence characteristics of Su liquor]
Lei Zheng1, Tuo Zhu, Guo-qing Chen
1School of Communication & Control Engineering, Jiangnan University, Wuxi 214122, China. mowlei@163.com
Abstract:
In the present paper, the authors studied Guoyuan and Yanghe which are the most representative types of Su liquor. The authors got the three-dimensional fluorescence spectra of the liquor and analyzed their unique characteristics. Guyuan has obvious characteristics of the fluorescence in the 280-400 nm excitation wavelength range, including a major peak of fluorescence. Yanghe contains five clear fluorescence peaks in the 200-450 nm range of excitation wavelength. The two series of liquor have clear fluorescent characteristics in the 310-350 nm range of excitation wavelength, The range includes some organic compounds which play a decisive role in taste and flavor of Su liquor. The result of research provides a scientific basis for improving the mixing process of Su liquor and enhancing the quality of liquor.
Related Concept Videos
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
UV–Vis Spectrometers
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
UV–Vis Spectroscopy: Beer–Lambert Law
IR and UV–Vis Spectroscopy of Carboxylic Acids
However, the stretching absorptions for the C=O bond vary depending on the structure of carboxylic acids. The C=O bond of the free carboxylic acids shows a higher stretching frequency, 1760 cm−1, while H-bonded carboxylic acids (dimers) exhibit stretching absorptions at a lower frequency, 1710 cm−1. The C=O bond of the...
IR and UV–Vis Spectroscopy of Aldehydes and Ketones
