Spatiotemporal Distribution, Sources, and Photobleaching Imprint of Dissolved Organic Matter in the Yangtze Estuary and Its Adjacent Sea Using Fluorescence and Parallel Factor Analysis

To investigate the seasonal and interannual dynamics of dissolved organic matter (DOM) in the Yangtze Estuary, surface and bottom water samples in the Yangtze Estuary and its adjacent sea were collected and characterized using fluorescence excitation-emission matrices (EEMs) and parallel factor anal...

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Veröffentlicht in:	PloS one 2015-06, Vol.10 (6), p.e0130852-e0130852
Hauptverfasser:	Li, Penghui, Chen, Ling, Zhang, Wen, Huang, Qinghui
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption coefficient Absorption, Radiation Absorptivity Analysis Biogeochemistry Bottom water Carbon China Dissolved organic matter Emission analysis Engineering Environmental science Estuaries Factor analysis Factor Analysis, Statistical Fluorescence Fresh Water Geologic Sediments Humic Substances - radiation effects Hydrology Laboratories Microbial degradation Microorganisms Nephelometry and Turbidimetry Photobleaching Rain Rainy season Rivers Salinity Salinity effects Salinity gradients Seasons Seawater Sediments Soil erosion Solubility Spatial distribution Spectrometry, Fluorescence Spectrophotometry, Ultraviolet Studies Sunlight Surface water Suspensions Temporal distribution Turbidity Water analysis Water Microbiology Water resources Water sampling
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Zusammenfassung:	To investigate the seasonal and interannual dynamics of dissolved organic matter (DOM) in the Yangtze Estuary, surface and bottom water samples in the Yangtze Estuary and its adjacent sea were collected and characterized using fluorescence excitation-emission matrices (EEMs) and parallel factor analysis (PARAFAC) in both dry and wet seasons in 2012 and 2013. Two protein-like components and three humic-like components were identified. Three humic-like components decreased linearly with increasing salinity (r>0.90, p
ISSN:	1932-6203 1932-6203
DOI:	10.1371/journal.pone.0130852