Diagnosis of the unexpected fluorescent contaminants in quantifying dissolved organic matter using excitation-emission matrix fluorescence spectroscopy

2019 ◽  
Vol 163 ◽  
pp. 114873 ◽  
Author(s):  
Chen Qian ◽  
Wei Chen ◽  
Bo Gong ◽  
Long-Fei Wang ◽  
Han-Qing Yu
Keyword(s):  
Organic Matter ◽  
Fluorescence Spectroscopy ◽  
Dissolved Organic Matter ◽  
Excitation Emission Matrix

Characterization of dissolved organic matter in watersheds of Lake Biwa and Lake Kasumigaura by excitation-emission matrix fluorescence spectroscopy and application of humification index

2008 ◽  
Vol 8 (6) ◽  
pp. 663-671 ◽  
Author(s):  
T. Kusakabe ◽  
T. Kitamura ◽  
Y. Suzuki
Keyword(s):  
Organic Matter ◽  
Fluorescence Spectroscopy ◽  
Dissolved Organic Matter ◽  
Paddy Field ◽  
Municipal Wastewater ◽  
Lake Biwa ◽  
Lake Kasumigaura ◽  
Humification Index ◽  
Excitation Emission Matrix ◽  
Vertical Variations

The objectives of this research were to characterize dissolved organic matter (DOM) by excitation-emission matrix (EEM) fluorescence spectroscopy and to apply humification index (HIX) to differentiate the origin and extent of humification of DOMs in watersheds of Lake Biwa and Lake Kasumigaura, Japan. EEM and HIX techniques were applied to lacustrine, riverine, and effluent organic matters. EEM spectra suggest that algal activity and the thermocline formation are critical to composition and distribution of DOM in Lake Biwa. Lake Kasumigaura DOM is evenly distributed over the lake. The effects of allochthonous sources are more conclusive for Lake Kasumigaura DOM than for Lake Biwa DOM. Seasonal and vertical variations in HIX were observed in Lake Biwa similar to results by EEM approach. Upstream DOMs were mostly humified fulvic acid originating from forest soil. DOM from a paddy field and municipal wastewater had the lowest HIX value and consisted mainly of less humified, fresh organic materials. Lacustrine and effluent DOMs demonstrated the same extent of humification in watersheds of Lake Biwa and Lake Kasumigaura. Allochthonous sources such as elution from a paddy field and municipal wastewater are more responsible for the composition of Lake Kasumigaura DOM compared to that of Lake Biwa DOM.

Evaluating Soil Dissolved Organic Matter Extraction Using Three-Dimensional Excitation-Emission Matrix Fluorescence Spectroscopy

Pedosphere ◽  
2017 ◽  
Vol 27 (5) ◽  
pp. 968-973 ◽  
Author(s):  
Wenming XIE ◽  
Shanshan ZHANG ◽  
Lin RUAN ◽  
Mingyue YANG ◽  
Weiming SHI ◽  
...  
Keyword(s):  
Organic Matter ◽  
Fluorescence Spectroscopy ◽  
Dissolved Organic Matter ◽  
Three Dimensional ◽  
Excitation Emission Matrix
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