Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions

Fluorescence spectra and polarization spectra of vinegar-water solutions with different concentration of CH3COOH have been studied. The characteristics and mechanism of fluorescence spectra are discussed, and polarization degree is calculated. Vinegar-water solutions are excited by ultraviolet (UV)...

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Main Authors: Dan Li, Xuan Wang, Caiqin Han
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Journal of Spectroscopy
Online Access:http://dx.doi.org/10.1155/2016/8416869
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author Dan Li
Xuan Wang
Caiqin Han
author_facet Dan Li
Xuan Wang
Caiqin Han
author_sort Dan Li
collection DOAJ
description Fluorescence spectra and polarization spectra of vinegar-water solutions with different concentration of CH3COOH have been studied. The characteristics and mechanism of fluorescence spectra are discussed, and polarization degree is calculated. Vinegar-water solutions are excited by ultraviolet (UV) light at 380 nm. The characteristic fluorescence peaks of the solution were identified at 445 nm and 470 nm. The type of emission fluorescence is π⁎→n. With the increasing concentration of CH3COOH/pH value, the peak intensity is enhanced first, and then fluorescence quenching occurs. The polarization degree confirms the molecular orientation of different sample solutions. This research provides theoretical and experimental basis for the physical/chemical properties and quality of vinegar detection by florescence spectroscopy.
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institution Kabale University
issn 2314-4920
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language English
publishDate 2016-01-01
publisher Wiley
record_format Article
series Journal of Spectroscopy
spelling doaj-art-8e4c61cacbb84888bc603de8e01968e52025-02-03T06:08:48ZengWileyJournal of Spectroscopy2314-49202314-49392016-01-01201610.1155/2016/84168698416869Study on the Fluorescence Spectra Characteristics of Vinegar-Water SolutionsDan Li0Xuan Wang1Caiqin Han2School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, ChinaSchool of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, ChinaSchool of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, ChinaFluorescence spectra and polarization spectra of vinegar-water solutions with different concentration of CH3COOH have been studied. The characteristics and mechanism of fluorescence spectra are discussed, and polarization degree is calculated. Vinegar-water solutions are excited by ultraviolet (UV) light at 380 nm. The characteristic fluorescence peaks of the solution were identified at 445 nm and 470 nm. The type of emission fluorescence is π⁎→n. With the increasing concentration of CH3COOH/pH value, the peak intensity is enhanced first, and then fluorescence quenching occurs. The polarization degree confirms the molecular orientation of different sample solutions. This research provides theoretical and experimental basis for the physical/chemical properties and quality of vinegar detection by florescence spectroscopy.http://dx.doi.org/10.1155/2016/8416869
spellingShingle Dan Li
Xuan Wang
Caiqin Han
Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
Journal of Spectroscopy
title Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
title_full Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
title_fullStr Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
title_full_unstemmed Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
title_short Study on the Fluorescence Spectra Characteristics of Vinegar-Water Solutions
title_sort study on the fluorescence spectra characteristics of vinegar water solutions
url http://dx.doi.org/10.1155/2016/8416869
work_keys_str_mv AT danli studyonthefluorescencespectracharacteristicsofvinegarwatersolutions
AT xuanwang studyonthefluorescencespectracharacteristicsofvinegarwatersolutions
AT caiqinhan studyonthefluorescencespectracharacteristicsofvinegarwatersolutions