A5005546025- Humic Substances and Bio-Organic Studies
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Analytical chemistry methods development
- Food Industry and Aquatic Biology
- Radioactive contamination and transfer
- Soil and Environmental Studies
- Enzyme-mediated dye degradation
- Coal and Coke Industries Research
- Microbial Community Ecology and Physiology
- Radioactive element chemistry and processing
- Agriculture and Biological Studies
- Aquatic and Environmental Studies
- Agricultural Productivity and Crop Improvement
- Plant Growth Enhancement Techniques
- Methane Hydrates and Related Phenomena
- Water Treatment and Disinfection
- Environmental and Industrial Safety
- Mass Spectrometry Techniques and Applications
- Coal Combustion and Slurry Processing
- Adsorption and biosorption for pollutant removal
- Pharmaceutical and Antibiotic Environmental Impacts
- Diamond and Carbon-based Materials Research
- Geology and Paleoclimatology Research
- Minerals Flotation and Separation Techniques
Lomonosov Moscow State University
2016-2025
Moscow State University
2009-2024
Far Eastern State Transport University
2022
National Academy of Sciences of Belarus
2021
State Research Institute of Organic Chemistry and Technology
2008
Ludwig-Maximilians-Universität München
1983
The objectives of this study were to identify molecular features characteristic arctic DOM from the Kolyma River basin and elucidate structural imprints induced by a choice sorption technique. To achieve goal, was isolated with use three nonionic sorbents: Amberlite XAD-8 resin, PPL- C18 - SPE cartridges, one anion exchanging resin-diethylaminoethyl (DEAE) -cellulose. studies conducted electrospray ionization Fourier Transform Ion Cyclotron Resonance (ESI FT-ICR) mass spectrometry liquid...
A method to enumerate labile hydrogens in all constituents of molecular ensemble natural organic matter (NOM) based on our previously developed simple hydrogen/deuterium (H/D) exchange (electrospray ionization (ESI) ion source (Kostyukevich et al. Anal. Chem. 2013, 85, 5330) and ultra-high-resolution Fourier transform cyclotron resonance mass spectrometry is presented. The was applied for analysis Suwannee River fulvic acid (SRFA), which an International Humic Substances Society standard, as...
This article describes the one-pot microwave synthesis of silver nanoparticles (AgNPs) assisted with natural polyelectrolytes—humic substances (HS). The humic polyelectrolytes served both as chemical reductants for ions and end-capping agents AgNPs. Three commercially available sodium humates extracted from lignites leonardite one fulvate isolated brown water seeped through peat deposits were used in this study. dynamics growth rate AgNPs was characterised by UV–VIS spectroscopy measuring...
The Siberian Arctic Shelf is undergoing major climate change in the Northern Hemisphere, heavily impacted by a massive release of dissolved organic matter (DOM) due to degradation permafrost as consequence global warming. This work devoted isolation large quantities DOM from Kara Sea, Laptev and East located west east along Shelf. goal was isolate marine water reference materials, addressing gap set available materials. Large volumes (500–700 L) were collected three target seas processed...
The exact structural formulas of model humic substances are identified using controllable H/D exchanged coupled to FTMS.
// Elena I. Fedoros 1, 5 , Alexey A. Orlov 2 Alexander Zherebker 2, 8 Ekaterina Gubareva 1 Mikhail Maydin Andrey Konstantinov Konstantin Krasnov 3 Ruben N. Karapetian 4 Izotova Sergey E. Pigarev V. Panchenko Margarita L. Tyndyk Dmitry Osolodkin 6, 7 Evgeny Nikolaev 8, 9, 10 Irina Perminova and Vladimir Anisimov N.N. Petrov National Medical Research Center of Oncology, Saint-Petersburg 197758, Russia Department Chemistry, Lomonosov Moscow State University, 119991, Institute Toxicology,...
The current article describes the biological activity of new biomaterials combining “green” properties humic substances (HSs) and silver nanoparticles. aim is to investigate antioxidant (AOA) HS matrices (macroligands) AgNPs stabilized with macroligands (HS-AgNPs). unique chemical feature HSs makes them very promising ligands (matrices) for AgNP stabilization. have previously been shown exert many pharmacological effects mediated by their AOA. showed a pronounced ability bind reactive oxygen...
An investigation was carried out on humic substances (HSs) isolated from the coal of Kansk-Achinsk basin (Krasnoyarsk Territory, Russia). The HSs demonstrate main parameters molecular structure inherent to this class natural compounds. assessment performed for chemical, microbiological, and pharmacological safety parameters, as well biological efficacy. HS sample meets requirements in microbiological purity, toxic metals content (lead, cadmium, mercury, arsenic), radionuclides. presence 11...
Anti-HIV potency of humic PAs is governed by scaffolds diversity.
The objective of this study was to shed light on structural features which underlay intensity long wave absorbance natural organic matter (NOM) using 1H NMR spectroscopy. For purpose, a set the NOM samples assembled from arctic and nonarctic sampling sites (the Kolyma river basin Moscow region, respectively). It ensure substantial difference in humification degree isolated matter—the biogeochemical proxy long-wave NOM. analyzed solution-state distribution both backbone exchangeable protons...
The objective of this study was to synthesize iron (hydr)oxide nanoparticles (IONPs) stabilized by humic substances, and estimate the feasibility their use for foliar application on deficient plants. IONPs were synthesized rapid hydrolysis iron(III) nitrate in a solution potassium humate. speciation nanoparticle morphologies characterized using X-ray diffraction, transmission electron microscopy, Mössbauer spectroscopy. obtained sample applied at concentrations 1- 10-mM Fe, 0.2% urea used as...
Humic substances (HS) are natural supramolecular systems of high- and low-molecular-weight compounds with distinct immunomodulatory protective properties. The key beneficial biological activity HS is their antioxidant activity. However, systematic studies the against biologically relevant peroxyl radicals still scarce. main objective this work was to estimate capacity (AOC) a broad set widely differing in structure using an oxygen radical absorption (ORAC) assay. For purpose, 25 samples...
Abstract
Biochemical stability of soil humus is an important factor affecting quality. Fungi are among the most efficient decomposers humic matter due to presence oxidative enzymes, including phenoloxidase laccase. Production laccase by zygomycetes, a group cellulolytic fungi widespread in soil, poorly studied. The potential role from zygomycetes turnover unknown. Here, we show for first time that zygomycetous fungus Mortierella elasson can effectively depolymerize acids vitro. produced...