Results 31 to 40 of about 11,613 (265)

THE ASSESSMENT OF ANALYTICAL DOUBLE-SHOT PYROLYSIS WITH GAS CHROMATOGRAPH-MASS SPECTROMETRY APPLICATION OPPORTUNITY FOR THE HUMIC MATTER INVESTIGATION IN SITU

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2018
Double-shot pyrolysis with gas chromatography and mass detection (Double-shot GC MS) was conducted for a sample of typical chernozem and humic acids separated from it. The humic acids preparations were pyrolyzed at 500, 600 and 700°C.
V. A. Kholodov   +3 more
doaj   +1 more source

Properties of humic acids from copper tailings 20 years after reclamation [PDF]

open access: yesJournal of the Serbian Chemical Society, 2020
Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991.
Radmanović Svjetlana B.   +5 more
doaj   +1 more source

Upcycling Water Pollutants Into Long‐Chain Polymers via Synergistic Interfacial Dechlorination and Organic Radical Stabilization

open access: yesAngewandte Chemie, EarlyView.
HEO‐regulated electronic structure drives nonradical PI activation, promoting ETP‐mediated polymerization of 4CP into high‐molecular‐weight products with enhanced surface enrichment. Concurrent dechlorination occurs via radical coupling and •OHads attack, enabling efficient carbon retention and selective product evolution at the liquid–solid interface.
Ziwei Yao   +8 more
wiley   +2 more sources

Eco-Friendly Polysaccharides as Moisture Retainers: Influence on Humic Acid Colloidal Stability in Model and Natural Systems

open access: yesMolecules
Hyaluronic acid and carboxymethyl cellulose are eco-friendly polysaccharides known for their excellent moisture retention properties, making them suitable components of agricultural fertilizers.
Gleb N. Trishkin   +3 more
doaj   +1 more source

Sorção do herbicida atrazine em complexos organominerais Sorption of herbicide atrazine in organic-mineral complexes

open access: yesPlanta Daninha, 2001
Este trabalho foi desenvolvido com o objetivo de avaliar a sorção do atrazine em complexos organominerais predominantes em solos tropicais. A amostra de herbicida utilizada na experimentação continha 97% de pureza. Alíquotas de 10 mL das soluções de 0,0;
S.O. Procópio   +8 more
doaj   +1 more source

Conductive Additives for Next‐Generation Batteries: Emphasizing the Potential of Bio‐Derived 3D Carbon Architectures at Electrode–Electrolyte Interfaces

open access: yesAdvanced Materials Interfaces, EarlyView.
3D conductive frameworks can maintain continuous electron transport, mechanical stability, and interfacial integrity, helping next‐generation batteries operate more efficiently. This Review examines their relevance to Si anodes, all‐solid‐state batteries, and dry‐processed electrodes, and highlights bio‐derived carbons as sustainable, structurally ...
SeoYoung Ha   +5 more
wiley   +1 more source

Directed Synthesis of Humic and Fulvic Derivatives with Enhanced Antioxidant Properties

open access: yesAgronomy, 2021
Redox moieties, which are present in the molecular backbone of humic substances (HS), govern their antioxidant properties. We hypothesized that a directed modification of the humic backbone via incorporation of redox moieties with known redox properties ...
Alexander B. Volikov   +11 more
doaj   +1 more source

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

open access: yesAdvanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li   +7 more
wiley   +1 more source

Molecular-mass distribution of humic substances from Arctic soils according to size exclusion chromatography

open access: yesPolish Polar Research, 2020
Humic substances are polydisperse mixtures of structurally complex matters with different molecular weights. The complexity of molecular composition of humic substances is reflected through their physical and chemical properties and results in diverse ...
Lodygin, Evgeny, Vasilevich, Roman
doaj   +1 more source

Stabilization of petroleum and oil emulsions by bioorganic compositions based on humic acids

open access: yesRUDN Journal of Ecology and Life Safety, 2023
The stabilizing ability of humic acids isolated from reed fen peat of the Ryazan region in the relation to oil and petroleum products under various abiotic conditions of the aquatic environment has been studied.
Maria M. Gertsen   +2 more
doaj   +1 more source

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