The concentrations in most wells in the upper aquifer which had detectable levels were less than 10 /渭g/1. In the middle aquifer, which crops out beneath much of the urban and industrial area adjacent to the De
Daily loads of particulate detrital carbon (PDC) and biotic carbon (BIC) were estimated for the principal source categories that included marshes, tributaries, the non-tidal Delaware River, point discharges, wet and dry atmospheric deposition, combined sewer overflows (CSOs), and non-point sources...
Non-pyrogenic sources are, for example, petroleum-derived (Podgorski et al. 2021; Brünjes et al. 2022) as well as fungal compounds (Brodowski et al. 2005). In fire-impacted catchments like in our study, charring and soot deposition are, however, quantitatively by far the most ...
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Because of that, the concept of “gelbstoff,” or “yellow substance” in German, came about. It was simply a way to describe the composition of the mixture of numerous organic compounds within the Baltic Sea.Tannins from decomposing vegetation have colored this river red....
A significantly higher DOC, but not dissolved organic nitrogen, occurred in the bloom than nonbloom period, suggesting that phytoplankton contributed to the production of more carbon-rich than nitrogen-rich compounds. DOC fueled threefold bacterial growth in the bloom period, exceeding the temperature ...
2000). The decrease in DOC binding affinity with greater salinity may stem from ionic strength-induced changes to dissolved humic structural conformation, essentially the 3D shape of the humic compounds. At high ionic strength, the charge repulsion between adjacent hydroxyl and carbonyl groups is ...
Thus, the impact of the complex redox chemistry occurring between Mn oxides and DOM on the partitioning of C to CO2 and organic compounds of varying complexity and oxidation state remains poorly defined. Further, the impacts of Mn oxides on the lability of DOM, and therefore our ability to ...
Transcriptomic or proteomic analyses of indi- vidual bacteria and communities (Teeling et al., 2012; Ottesen et al., 2014) alongside the identifica- tion of DOM compounds in the exometabolome (Romano et al., 2014; Schwedt et al., 2015) and marine DOM, prospectively on a structural level,...
a bifunctional compound may have the form of a macromonomer containing repeating units having the capacity to bond to the particle surface and other repeated units having the desired polymerizable or initiating functionality, and such macromonomeric bifunctional compounds may form polymeric stabilizers that...