Results 21 to 30 of about 3,813,979 (282)

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

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

Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]

open access: yes, 2012
High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
Zimov, Nikita   +7 more
core   +1 more source

Pan-arctic trends in terrestrial dissolved organic matter from optical measurements [PDF]

open access: yes, 2016
Climate change is causing extensive warming across arctic regions resulting in permafrost degradation, alterations to regional hydrology, and shifting amounts and composition of dissolved organic matter (DOM) transported by streams and rivers.
Tank, Suzanne   +38 more
core   +1 more source

Natural organic matter coagulation [PDF]

open access: yes, 2005
The removal of natural organic matter (NOM) is one of the main challenges facing water utilities in both the UK and the US. As a consequence of changes in land management and an increased carbon loss from solids, a greater amount of accumulated ...
Sharp, Emma
core   +7 more sources

Utilizing Colored Dissolved Organic Matter to Derive Dissolved Black Carbon Export by Arctic Rivers [PDF]

open access: yes, 2015
Wildfires have produced black carbon (BC) since land plants emerged. Condensed aromatic compounds, a form of BC, have accumulated to become a major component of the soil carbon pool. Condensed aromatics leach from soils into rivers, where they are termed
Holmes, Robert   +26 more
core   +1 more source

Characterization of Dissolved Organic Matter in River Water by Conventional Methods and Direct Sample Analysis-Time of Flight-Mass Spectrometry

open access: yesJournal of Chemistry, 2016
The dissolved organic matter in surface waters is composed of fractions of different molecular weight and polarity, characteristics that determine their capacity for complexing different types of pollutants and their environmental impact.
T. Garrido Reyes, J. Mendoza Crisosto
doaj   +1 more source

Performance of Alum Coagulation and Adsorption on Removing Organic Matter and E. coli [PDF]

open access: yesNature Environment and Pollution Technology, 2023
Surface water is the primary resource for raw water in drinking water treatment processes. Therefore, the presence of microorganisms, bacteria, and viruses should be the main focus in drinking water treatment, in addition to natural organic matter, which
E. N. Hidayah, O. H. Cahyonugroho and N. A. Fauziyah
doaj   +1 more source

Benthic fluxes of dissolved organic nitrogen in the Lower St. Lawrence Estuary and implications for selective organic matter degradation [PDF]

open access: yes, 2013
The distribution of dissolved organic nitrogen (DON) and carbon (DOC) in sediment porewaters was determined at nine locations along the St. Lawrence estuary and in the gulf of St. Lawrence. In a previous manuscript (Alkhatib et al., 2012a), we have shown
Gelinas, Y.   +7 more
core   +2 more sources

Investigating the Ionization of Dissolved Organic Matter by Electrospray [PDF]

open access: yesAnalytical Chemistry, 2020
Electrospray ionization (ESI) operating in the negative mode coupled to high-resolution mass spectrometry is the most popular technique for the characterization of dissolved organic matter (DOM). The vast molecular heterogeneity and the functional group diversity of this complex mixture prevents the efficient ionization of the organic material by a ...
Claudia Patriarca   +6 more
openaire   +3 more sources

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