Fluorescence excitation-emission matrix spectra coupled with parallel factor and regional integration analysis to characterize organic matter humification

被引：181

作者：

He, Xiao-Song ^{[1
,2
]}

Xi, Bei-Dou ^{[1
,2
]}

Li, Xiang ^{[1
,2
]}

Pan, Hong-Wei ^{[1
,2
]}

An, Da ^{[1
,2
]}

Bai, Shuo-Guo ^{[1
,2
]}

Li, Dan ^{[1
,2
]}

Cui, Dong-Yu ^{[1
,2
]}

机构：

[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China

[2] Chinese Res Inst Environm Sci, Lab Water Environm Syst Engn, Beijing 100012, Peoples R China

来源：

CHEMOSPHERE | 2013年 / 93卷 / 09期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Dissolved organic matter; Excitation-emission matrix (EEM) spectra; Parallel factor analysis (PARAFAC); Fluorescence regional integration (FRI); Projection pursuit cluster (PPC) model; BIOLOGICAL STABILITY; HUMIC SUBSTANCES; RAPID ASSESSMENT; SPECTROSCOPY;

D O I：

10.1016/j.chemosphere.2013.04.039

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present several humification indexes cannot provide the whole fluorescence information on organic matter composition and the evaluation results from them are inconsistent sometimes. In this study, fluorescence excitation-emission matrix spectra coupled with parallel factor analysis and fluorescence regional integration analysis were utilized to investigate organic matter humification, and the projection pursuit cluster (PPC) model was applied to form a suitable index for overcoming the difficulties in multi-index evaluation. The result showed that the ratio between the volume of humic- and fulvic-like fluorescence region and the volume of protein-like fluorescence region not only revealed the heterogeneity of organic matter, but also provided more accurate information on organic matter humification. In addition, the results showed that the PPC model could be used to characterize integrally the humification, and the projected characteristic value calculated from the PPC model could be used as the integrated humification evaluation index. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2208 / 2215

页数：8

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