Results 21 to 30 of about 70,069 (298)

Solid phase extraction of ocean dissolved organic matter with PPL cartridges: efficiency and selectivity

open access: yesFrontiers in Marine Science, 2023
Our current knowledge of the chemical composition of ocean dissolved organic matter (DOM) is limited, mainly because of its extreme molecular diversity, low concentration of individual compounds and the elevated ionic strength of ocean waters.
E. Jerusalén-Lleó   +7 more
doaj   +1 more source

Applying Fluorescence Dissolved Organic Matter Spectra and Phytoplankton Biology Index for Assessing Urban River Quality

open access: yesJournal of Mathematical and Fundamental Sciences, 2023
The relationship between phytoplankton dynamics and dissolved organic matter (DOM) in aquatic systems based on fluorophore organic matter properties results in poor implementation of methods for water quality monitoring.
Okik Hendriyanto Cahyonugroho   +2 more
doaj   +1 more source

The influence of pH on dissolved organic matter fluorescence in inland waters

open access: yesAnalytical Methods, 2022
Fluorescence is an easily available analytical technique used to assess the optical characteristics of dissolved organic matter (DOM).
Groeneveld, M.   +4 more
openaire   +6 more sources

Coupling Between Carbon and Nitrogen Metabolic Processes Mediated by Coastal Microbes in Synechococcus-Derived Organic Matter Addition Incubations

open access: yesFrontiers in Microbiology, 2020
Phytoplankton are major contributors to labile organic matter in the upper ocean. Diverse heterotrophic bacteria successively metabolize these labile compounds and drive elemental biogeochemical cycling.
Rui Xie   +12 more
doaj   +1 more source

Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses

open access: yesFrontiers in Marine Science, 2022
Dissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly.
Yafeng Zhong   +7 more
doaj   +1 more source

Drivers of fluorescent dissolved organic matter in the global epipelagic ocean [PDF]

open access: yesLimnology and Oceanography, 2016
AbstractFluorescent dissolved organic matter (FDOM) in open surface waters (< 200 m) of the Atlantic, Pacific, and Indian oceans was analysed by excitation‐emission matrix (EEM) spectroscopy and parallel factor analysis (PARAFAC). A four‐component PARAFAC model was fit to the EEMs, which included two humic‐ (C1 and C2) and two amino acid‐like (C3 ...
Catalá, T. S.   +13 more
openaire   +4 more sources

Fluorescent signatures of autochthonous dissolved organic matter production in Siberian shelf seas

open access: yesFrontiers in Marine Science, 2022
The East Siberian Sea is an area of high biogeochemical activity caused by multiple factors, such as an influence of river runoff, Atlantic, and Pacific waters, formation and melting of sea ice, and internal circulation.
Anastasia N. Drozdova   +4 more
doaj   +1 more source

Sulfate Reduction in Sediments Produces High Levels of Chromophoric Dissolved Organic Matter [PDF]

open access: yes, 2017
Sulfate reduction plays an important role in altering dissolved organic matter (DOM) in estuarine and coastal sediments, although its role in the production of optically active chromophoric DOM (CDOM) and a subset of fluorescent DOM (FDOM) has not been ...
Gonsior, Michael   +4 more
core   +2 more sources

Characterizing dissolved organic matter in Taihu Lake with PARAFAC and SOM method

open access: yesWater Science and Technology, 2022
The three-dimensional fluorescence spectrum has a significantly greater amount of information than the single-stage scanning fluorescence spectrum. At the same time, the parallel factor (PARAFAC) analysis and neural network method can help explore the ...
W. Zhang, T. Li, B. Dong
doaj   +1 more source

A model for predicting dissolved organic carbon distribution in a reservoir water using fluorescence spectroscopy [PDF]

open access: yes, 2004
A number of water treatment works (WTW) in the north of England (UK) have experienced problems in reducing the dissolved organic carbon (DOC) present in the water to a sufficiently low level.
Banks, Jenny   +6 more
core   +3 more sources

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