Dissolved organic compounds (DOC) are a heterogeneous mixture of organic molecules operationally defined as passing through a 0.2–0.7 µm filter in aquatic or soil solutions, encompassing low-molecular-weight metabolites (e.g., amino acids, sugars, organic acids) and high-molecular-weight macromolecules (e.g., humic substances, polysaccharides, proteins). They play central roles in biogeochemical cycles as substrates for microbial metabolism, precursors for disinfection by-products, and regulators of metal speciation, light attenuation, and redox processes. In research, DOC is quantified typically as dissolved organic carbon and characterized by spectroscopic, chromatographic, and high-resolution mass spectrometric methods to resolve sources, reactivity, and transformation pathways.
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Earth Sciences
Jul 14, 2026
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Environment
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10
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Ecology
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Agriculture
May 13, 2026
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Ecology
Apr 23, 2026
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A study conducted at the Institute of Science and Technology of São Paulo State University (ICT-UNESP) in São José dos Campos, Brazil, shows that Moringa oleifera, also known as moringa or white acacia, has the potential ...
Plants & Animals
Apr 16, 2026
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101
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Environment
Mar 18, 2026
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Earth Sciences
Mar 16, 2026
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21
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Earth Sciences
Mar 3, 2026
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Freshwater browning is stunting fish growth of some species, shrinking populations of others and changing the composition of fish communities, McGill-led research suggests. "Browning" refers to freshwater bodies turning tea-colored, ...
Ecology
Jan 19, 2026
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