Characterization of dissolved organic matter extracted from fermentation effluent of swine manure slurry using spectroscopic techniques and parallel factor analysis (PARAFAC)

2012 ◽  
Vol 102 ◽  
pp. 115-122 ◽  
Author(s):  
Xujing Guo ◽  
Xiaosong He ◽  
Hui Zhang ◽  
Yu Deng ◽  
Lu Chen ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Swine Manure ◽  
Parallel Factor Analysis ◽  
Spectroscopic Techniques ◽  
Parallel Factor ◽  
Manure Slurry

scholarly journals Characterization of dissolved organic matter (DOM) from glacial environments using total fluorescence spectroscopy and parallel factor analysis

2010 ◽  
Vol 51 (56) ◽  
pp. 111-122 ◽  
Author(s):  
Ashley Dubnick ◽  
Joel Barker ◽  
Martin Sharp ◽  
Jemma Wadham ◽  
Grzegorz Lis ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Parallel Factor Analysis ◽  
Glacier Ice ◽  
Total Fluorescence ◽  
Glacial Environments ◽  
Parallel Factor ◽  
And Cluster Analysis

AbstractAquatic dissolved organic matter (DOM) is a major reservoir of reduced organic carbon and has a significant influence on heterotrophic biological productivity and water quality in marine and freshwater environments. Although the forms and transformations of DOM in temperate aquatic and soil environments have been studied extensively, this is not the case for glacial environments. In this study, fluorescent excitation–emission matrices (EEMs), parallel factor analysis (PARAFAC) and cluster analysis were used to characterize the fluorescing components of DOM in ice and water samples from supraglacial, englacial, subglacial and proglacial environments of seven glaciers in the Canadian Arctic, Norway and Antarctica. At least five significant fluorescent DOM fractions were identified, which accounted for 98.2% of the variance in the dataset. These included four protein-like components and one humic-like component. The predominantly proteinaceous character of DOM from these glaciers is very different from the more humic character of DOM described previously from lacustrine, fluvial, estuarine and marine environments. DOM from the sampled glaciers is broadly similar in character despite their geographically distinct locations, different thermal regimes and inter- and intra-site differences in potential organic matter sources. Glacier ice samples had a relatively low ratio of humic-like :protein-like fluorescence while meltwater samples had a higher ratio.

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