The C-13 and proton NMR spectra, which clarified the differences in chemical characteristics among the various humic substances, showed that the marine humic acids had more aliphatic and less aromatic character than the Aldrich humic acid, and the marine fulvic acids had polysaccharide-like character...
Contrary, it has been postulated that the reaction of ozone with humic substances might also generate species that promote the conversion of O3 into OH [14], [15]. However, to our knowledge, there have been very few evaluative studies of the application of ozonation process into the ...
The C-13 and proton NMR spectra, which clarified the differences in chemical characteristics among the various humic substances, showed that the marine humic acids had more aliphatic and less aromatic character than the Aldrich humic acid, and the marine fulvic acids had polysaccharide-like character...
This again suggests a modification (increase) in the bacterial consumption of humic-like substances in the DOM exudates in the presence of MP (Fig. 4B). Humic substances can be both consumed and produced by marine bacteria36,37. In the more productive conditions of ES2, samples in dark ...
The findings from the HMA are consistent with recent findings indicating preferential degradation of humics-like substances during methanogenic degradation in sediments with high terrestrial organic matter loading [30]. Since benzoate is the central intermediate in the anaerobic degradation pathway of most...
humic-like substances25,64,65,66. The relative importance of these sources and sinks of metal-binding organic matter are unknown. As the understanding of the importance of trace metals other than Fe for biota has been documented in recent years, the role of ligands in controlling ...
Humic-like substances (HULIS) in ship engine emissions: molecular composition effected by fuel type, engine mode, and wet scrubber usage Environ. Sci. Technol. (2023), 10.1021/acs.est.3c04390 Google Scholar Sippula et al., 2014 O. Sippula, B. Stengel, M. Sklorz, T. Streibel, R. Rab...
Humic acid like substances (HULIS), such as Leonardite (humic acid) and Suwannee River Fulvic Acid (fulvic acid), are employed as surrogates of biomass burning particles. Their ability to nucleate ice heterogeneously before and after exposure to ozone is investigated. The humic acid and fulvic ...
Therefore, the presence of plastic containing substances like polystyrene may promote toxin removal. Costa et al. (2020) conducted a 96-hour experiment to examine the sorption of OA (10 ng/mL) onto circular plastic fragments (6 mm in size) made of polyethylene terephthalate (PET), ...
Most of the work on the effects of these substances has been done on crustaceans. A species-specific urinary sex attractant is produced by premoult female crabs of the genera Portunus, Carcinus ~nd Macropipus (147, 148) and some preliminary investigations into the chemical nature of that in ...