腐殖质
荧光
有机质
基质(化学分析)
环境化学
激发
化学
分析化学(期刊)
环境科学
物理
色谱法
土壤科学
有机化学
光学
土壤水分
量子力学
作者
Xiao-Song He,Beidou Xi,Xiang Li,Hongwei Pan,Da An,Shuo-Guo Bai,Dan Li,Dongyu Cui
出处
期刊:Chemosphere
[Elsevier]
日期:2013-11-01
卷期号:93 (9): 2208-2215
被引量:150
标识
DOI:10.1016/j.chemosphere.2013.04.039
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.
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