Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 9, Pages 9132-9144Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-1190-4
Keywords
Multivariable analysis; Rayleigh light scattering regions; Dissolved organic matter; Particulate/colloidal organic matter; Effluent-dominated stream
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Funding
- Chinese National Natural Science Funds for Distinguished Young Scholar [51325804]
- National Natural Science Foundation of China [51408573]
- Scientific Research Foundation of the Higher Education Institutions of Henan Province [16A570001]
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Fluorescence excitation-emission matrix (EEM) spectroscopy combined with principal component analysis (PCA) and parallel factor analysis (PARAFAC) were used to investigate the compositional characteristics of dissolved and particulate/colloidal organic matter and its correlations with nitrogen, phosphorus, and heavy metals in an effluent-dominated stream, Northern China. The results showed that dissolved organic matter (DOM) was comprised of fulvic-like, humic-like, and protein-like components in the water samples, and fulvic-like substances were the main fraction of DOM among them. Particulate/colloidal organic matter (PcOM) consisted of fulvic-like and protein-like matter. Fulvic-like substances existed in the larger molecular form in PcOM, and they comprised a large amount of nitrogen and polar functional groups. On the other hand, protein-like components in PcOM were low in benzene ring and bound to heavy metals. It could be concluded that nitrogen, phosphorus, and heavy metals in effluent had an effect on the compositional characteristics of natural DOM and PcOM, which may deepen our understanding about the environmental behaviors of organic matter in effluent.
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