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Humic Substances Facilitate Arsenic Reduction and Release in Flooded Paddy Soil.
Environmental Science and Technology, 2019Organic matter is important for controlling arsenic reduction and release under anoxic conditions. Humic substances (HS) represent an important fraction of natural organic matter, yet the manner in which HS affect arsenic transformation in flooded paddy ...
J. Qiao +8 more
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Humic substances as electron acceptors for anaerobic oxidation of methane driven by ANME-2d.
Water Research, 2019Humic substances (humics) are ubiquitous in terrestrial and aquatic environments where they can serve as electron acceptors for anaerobic oxidation of organic compounds. Methane is a powerful greenhouse gas, as well as the least reactive organic molecule.
Ya-Nan Bai +7 more
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Antioxidant Properties of Humic Substances
Environmental Science & Technology, 2012Humic substances (HS) are heterogeneous, redox-active organic macromolecules. While electron transfer to and from HS under reducing conditions is well investigated, comparatively little is known on the electron donating (i.e., antioxidant) properties of HS under oxic conditions.
Aeschbacher M +3 more
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Immobilized humic substances as sorbents
Chemosphere, 2006A new method was developed for the immobilization of humic substances. Humic acids (HA) immobilized onto different carriers were studied as sorbents for organic and inorganic substances. The sorption isotherms of 4-aminoazobenzene, Crystal Violet, Methylene Green, and flavine mononucleotide on immobilized HA show that pH and salt concentration have a ...
Maris, Klavins +2 more
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Chemosphere, 2018
Depicted as large polymers by the traditional model, humic substances (HS) tend to be considered resistant to biodegradation. However, HS should be regarded as supramolecular associations of rather small molecules.
E. Lipczynska‐kochany
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Depicted as large polymers by the traditional model, humic substances (HS) tend to be considered resistant to biodegradation. However, HS should be regarded as supramolecular associations of rather small molecules.
E. Lipczynska‐kochany
semanticscholar +1 more source
IAA detection in humic substances
Soil Biology and Biochemistry, 1998The aim of the work was to verify if humic substances conaine auxin component able to justify its biological activity. To this aim various preparations of anti-IAA antibodies were used. Quantitative determinations of IAA in HS was corried out using an enzyme immunoassay, Phytodetek-IAA.
MUSCOLO A, CUTRUPI S, NARDI, SERENELLA
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Protein Encapsulation by Humic Substances
Environmental Science & Technology, 2011Protein encapsulation by natural organic matter is hypothesized to preserve the activity of proteins in terrestrial and aquatic environments. Direct molecular-level evidence for encapsulation of net positively charged proteins lysozyme, trypsin, and ribonuclease A by a diverse set of humic substances (HS) in nanostructured films was collected using a ...
Tomaszewski JE +2 more
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Effects of pollution on humic substances
Journal of Environmental Science and Health, Part B, 1980To assess effects of industrial and environmental pollution on analytical characteristics of humic substances, we isolated humic acids (HA's) and fulvic acids (FA's) from unpolluted and polluted soils and sediments. Following purification, the HA's and FA's were characterized by elemental (C, H, O, N, S) and functional group (CO2H, phenolic OH, total ...
M, Schnitzer, H, Kerndorff
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