Results 121 to 130 of about 5,143,384 (251)

Iron biogeochemistry across marine systems progress from the past decade [PDF]

open access: yes, 2010
Based on an international workshop (Gothenburg, 14–16 May 2008), this review article aims to combine interdisciplinary knowledge from coastal and open ocean research on iron biogeochemistry. The major scientific findings of the past decade are structured
Achterberg, E. P.   +22 more
core   +5 more sources

fulvic acid

open access: yes
Citation: 'fulvic acid' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14703 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

CONCENTRATION, DISTRIBUTION AND RATIO OF THE MAIN ORGANIC MATTER COMPONENTS IN LAKE ONEGO WATER

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
Seasonal studies of the main organic matter components (fulvic and humic acids, carbohydrates, lipids, proteins, urea) were carried out in 2016–2017. The research was conducted in the oligotrophic and oligohumic central part of Lake Onego, mesotrophic ...
Tatyana Efremova, Mariya Zobkova, Mariya
doaj   +1 more source

A Use of Tritium-Labeled Peat Fulvic Acids and Polyphenolic Derivatives for Designing Pharmacokinetic Experiments on Mice. [PDF]

open access: yesBiomedicines, 2021
Badun GA   +9 more
europepmc   +1 more source

Determination of Silver Binding to Natural Organic Matter Using Ion Selective Electrode [PDF]

open access: yes, 2017
Natural organic matter (NOM) is considered an important factor in the protection of the aquatic environments; organic ligands can complex with metals, to decrease their toxicity and bioavailability. NOM is measured as dissolved organic carbon (DOC) in mg
Alshammari, Mona Muhawwis
core   +1 more source

Humic acid from Shilajit – a physico-chemical and spectroscopic characterization [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
Shilajit is a blackish–brown exudation, consisting of organic substances, metal ions and minerals, from different formations, commonly found in the Himalayan region (1000–3000 m) from Nepal to Kashmir.
SURAJ P. AGARWAL   +4 more
doaj  

Spectral Characteristics Related to Chemical Substructures and Structures Indicative of Organic Precursors from Fulvic Acids in Sediments by NMR and HPLC-ESI-MS. [PDF]

open access: yesMolecules, 2021
López-Martínez VG   +6 more
europepmc   +1 more source

Electrochemical Properties of Synthetic Fulvic Acids

open access: yes, 1969
Synthetic fulvic acids have been prepared from each of catechol, hydroquinone, resorcinol, vanillin, glucose and gallic acid with and without glycine as the source of nitrogen by air oxidation in 0·5N sodium hydroxide solution at 32° in presence of clay, silt and sand fractions of soil as catalysts.
S. Sur, S. K. Mukherjee
openaire   +1 more source

Production, Characterization and Design of Applications of Regenerated Humic Acids [PDF]

open access: yes, 2011
Předkládaná disertační práce se zabývá huminovými látkami (HL), zejména huminovými kyselinami a jejich solemi, tj. humáty. V práci je prezentována literární rešerše o huminových látkách, stručně je zmíněna historie výzkumu huminových látek, obsáhle jsou ...
David, Jan
core  

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