胞外聚合物
化学
荧光
荧光光谱法
光谱学
废水
离子强度
基质(化学分析)
无氧运动
分析化学(期刊)
环境化学
色谱法
环境工程
水溶液
有机化学
生物膜
细菌
生物
量子力学
物理
工程类
遗传学
生理学
作者
Guo‐Ping Sheng,Han‐Qing Yu
出处
期刊:Water Research
[Elsevier]
日期:2006-03-01
卷期号:40 (6): 1233-1239
被引量:636
标识
DOI:10.1016/j.watres.2006.01.023
摘要
In this study three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy was applied to characterize the extracellular polymeric substances (EPS) extracted from aerobic and anaerobic sludge in wastewater treatment. Three fluorescence peaks were identified in EEM fluorescence spectra of the EPS samples. Two peaks were attributed to the protein-like fluorophores, and the third to the humic-like fluorophores. The effects of both pH and EPS concentration were significant on EEM fluorescence spectra of EPS, but the ionic strength had no substantial effect on EEM spectra of the EPS. The differences in the EPS fluorescence parameters, e.g., peak locations, intensities and ratios of various peak intensities, indicate the difference in the chemical structures of the EPS from various origins. EEM spectroscopy was proven to be an appropriate and effective method to characterize the EPS from various origins in wastewater treatment systems.
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