Results 61 to 70 of about 63,548 (216)

Humic acids characterization by EDXS and 13C NMR spectroscopy

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
Determination of humic acids spectral characteristics performed fast and convenient method for their quality evaluation. Humic acids (HA) were isolated from five different soil types (Luvi-haplic Chernozem, Haplic Luvisol, Haplic Cambisol, Leptic ...
Ľubica Pospíšilová   +3 more
doaj   +1 more source

HUMIC ACIDS IN THE ENVIRONMENT

open access: yes, 2023
Humic acids, belonging to the humic substances, are the most reactive organic compounds in water, soil and sediments. They are known for their role in processes related to soil structure, biology, and chemistry, as well as for their effects on the behavior of environmental pollutants.
Marković, Mirjana   +3 more
openaire   +2 more sources

Evaluation of Activated Carbon as a Reactive Cap Sorbent for Sequestration of PCBs in Presence of Humic Acid [PDF]

open access: yes, 2009
This study investigated the interferences caused by high humic acid concentrations on the adsorption of coplanar and noncoplanar polychlorinated biphenyls (PCBs) on coconut shell activated carbon. In particular, the research focuses on the application of
Gardner, Kevin H.   +4 more
core   +1 more source

Sonochemical Degradation of Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoate (PFOA) in Landfill Groundwater: Environmental Matrix Effects [PDF]

open access: yes, 2008
Perfluorinated chemicals such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are environmentally persistent and recalcitrant to most conventional chemical and microbial treatment technologies.
Cheng, Jie   +4 more
core   +3 more sources

Coupled Extraction/Re-Extraction Method for the Chemical Speciation of Nickel in NaturalWaters [PDF]

open access: yes, 2020
Chemical fractionation and speciation of metals species in natural waters and its relation with bioavailability have received increased attention in recent years.
Mendiguchía Martínez, Carolina   +2 more
core   +2 more sources

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

Characterization of regenerated humic acids [PDF]

open access: yes, 2010
Práca sa zaoberá fyzikálnou charakteristikou humínových látok, najmä draselných a amónnych solí rôzne regenerovaných humínových kyselín, pripravených z juhomoravského lignitu.
Ivancová, Anna
core  

Field corn yield in response to humic acids application in the absence or presence of liming and mineral fertilization

open access: yesSemina: Ciências Agrárias, 2019
Corn cultivation continually demands new technologies, since average yields can still be increased. This study aimed to evaluate the response of high-yield corn to humic acids, isolated from organic manure compost, with or without the application of lime
Marihus Altoé Baldotto   +2 more
doaj   +1 more source

On artificial humic acids [PDF]

open access: yesSoil Science and Plant Nutrition, 1956
I. Absorption Spectra of Some Artificial Humic Acids It is a well known fact that numerous dark brown or black and amorphous substances cap be produced from organic compounds by purely chemical pro...
openaire   +1 more source

Evaluation of organic matter stability during the composting process of agroindustrial wastes. [PDF]

open access: yes, 2002
Composting of wastes from citrus industrial processing (pastazzo and sludge) was studied in order to evaluate the evolution of organic matter during the process and to individuate chemical and/or biochemical techniques able to set the stability of the ...
Benedetti, Anna   +3 more
core   +1 more source

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