Results 31 to 40 of about 944,278 (220)

Effects of Methane Fermentation on Spectral Properties of Fulvic Acid Extracted from Peat through Liquid Acid Precipitation

open access: yesJournal of Chemistry, 2020
The effects of acid precipitation with different liquid acids on spectral properties of fulvic acid extracted from peat was studied to select the most appropriate liquid acid for the acid precipitation step of the alkali solution acid precipitation ...
Li-Tong Ma, Ya-Nan Lu, Ya-Xiong Wang
doaj   +1 more source

Use of biologically active substances in hops

open access: yesPlant, Soil and Environment, 2018
In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (
Pavel PROCHÁZKA   +4 more
doaj   +1 more source

A Comprehensive Toxicological Assessment of Fulvic Acid

open access: yesEvidence-Based Complementary and Alternative Medicine, 2020
Fulvic acid (FA), a humic substance, has several nutraceutical properties, including anti‐inflammation, antimicrobial, and immune regulation abilities. However, systematic safety assessment remains insufficient. In the present study, a battery of toxicological studies was conducted per internationally accepted standards to investigate the genotoxicity ...
Chongshan Dai   +4 more
openaire   +2 more sources

Competition from Cu(II), Zn(II) and Cd(II) in Pb(II) binding to Suwannee River Fulvic Acid [PDF]

open access: yes, 2008
This is a study of trace metal competition in the complexation of Pb(II) by well-characterized humic substances, namely Suwannee River Fulvic Acid (SRFA) in model solutions.
Chakrabarti, C.L., Chakraborty, P.
core   +1 more source

Humic and Fulvic Acids as Specific Sorbents of Herbicides in Water

open access: yes, 2021
The ability of humic and fulvic acids (isolated from lignite with a simple, quick, and inexpensive method) to bind the active ingredients of herbicides contaminating drinking water is evaluated.
Vrantsi E., Lakka A., Bozinou E., Athanasiadis V., Papadaki E.S., Dourtoglou V.G., Lalas S.I.
core   +1 more source

Influence of humus acids on mobility and biological availability of iron, zinc and copper

open access: yesAgricultural Science and Practice, 2015
Soil organic matter is known as an important condition for the mobility of trace elements in soils, their geo- chemical migration and availability to plants.
A. Fateev   +3 more
doaj   +1 more source

Field Efficiency of Humic Substances, Boric Acid and some Novel Insecticides against Aphis gossypii Glover and Bemisia tabaci (Gennadius) on Cotton Plants [PDF]

open access: yesJournal of Plant Protection and Pathology, 2018
Nutritive acids improve the plant growth via increasing its carbohydrates content and nutrients uptake, and enhance the plant resistance to biotic and a biotic stress factors.
Madeha El - Dewy, E. El - Zahi
doaj   +1 more source

Biostimulants derived from organic urban wastes and biomasses: An innovative approach

open access: yesFrontiers in Chemistry, 2023
We used humic and fulvic acids extracted from digestate to formulate nanohybrids with potential applications in agronomy. In order to obtain a synergic co-release of plant-beneficial agents, we functionalized with humic substances two inorganic matrixes:
Alessia Giordana   +5 more
doaj   +1 more source

Heavy metal distribution between fractions of humic substances in heavily polluted soils

open access: yesPlant, Soil and Environment, 2004
Soil organic matter is important in controlling heavy metal behaviour in soils. This study aims to determine the distribution of organically bound Cd, Pb, and Zn between humic and fulvic acids in 20 samples of heavily polluted Fluvisols.
L. Borůvka, O. Drábek
doaj   +1 more source

MIGRATION FORMS OF BASIC IONS IN GROUNDWATER OF COAL-BEARING SEDIMENTS OF KUZBASS WITH A FOCUS ON COMPOUNDS WITH HUMIC ACIDS (BY SIMULATION RESULTS)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2022
The relevance. When studying the formation of the composition of organic-rich waters, it is necessary to take into account organomineral compounds that shift the equilibria in geochemical processes (dissolution, leaching, precipitation and co-deposition,
Olesya E. Lepokurova   +2 more
doaj   +1 more source

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