Characterization of dissolved organic matter in urban sewage using excitation emission matrix fluorescence spectroscopy and parallel factor analysis

Wastewater dissolved organic matter （DOM） from different processing stages of a sewage treatment plant in Xiamen was characterized using fluorescence and absorption spectroscopy. Parallel factor analysis modeling of excitation-emission matrix spectra revealed five fluorescent components occurring in...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental sciences (China) 2010-11, Vol.22 (11), p.1728-1734
Main Authors: Guo, Weidong, Xu, Jing, Wang, Jiangping, Wen, Yingrou, Zhuo, Jianfu, Yan, Yuchao
Format: Article
Language:English
Subjects:
Dissolved organic matter
Excitation spectra
Factor analysis
Fluorescence
fluorescence EEM
Indication
Organic Chemicals - analysis
parallel factor analysis
Sewage
Sewage - analysis
Spectra
Spectrometry, Fluorescence
Waste water
Water Pollutants, Chemical - analysis
发射光谱
因子分析
有机物质
水溶解
污水利用
矩阵显示
荧光光谱
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Wastewater dissolved organic matter （DOM） from different processing stages of a sewage treatment plant in Xiamen was characterized using fluorescence and absorption spectroscopy. Parallel factor analysis modeling of excitation-emission matrix spectra revealed five fluorescent components occurring in sewage DOM： one protein-like （C1）, three humic-like （C2, C4 and C5） and one xenobiotic-like （C3） components. During the aerated grit chamber and primary sedimentation tank stage, there was only a slight decrease in fluorescence intensity and the absorption coefficient at 350 nm （a 350 ）. During the second aeration stage, high concentration of protein-like and short-wavelength-excited humic-like components were significantly degraded accompanied by significant loss of DOC （80%） and a 350 （30%）, indicating that C1 and C2 were the dominant constituents of sewage DOM. As a result, long-wavelength- excited C4 and C5 became the dominant humic-like components and the DOM molecular size inferred from the variation of spectral slope S （300–650 nm） and specific absorption （a 280 /DOC） increased. Combination use of F max of C1 and the ratio of C1/C5, or a 350 may provide a quantitative indication for the relative amount of raw or treated sewage in aquatic environment.
ISSN:1001-0742
1878-7320
DOI:10.1016/S1001-0742(09)60312-0