Results 251 to 260 of about 21,949 (310)

Exploring dissolved organic matter diversity and water quality in the Tajan River using PARAFAC techniques. [PDF]

PLoS One
Zazouli MA, Gholami Z, Hashempour Y, Babanezhad E, Fendereski A.   +4 more
europepmc   +1 more source

Competitive adsorption of pharmaceuticals and dissolved organic matter from hospital effluent on amine-functionalized periodic mesoporous organosilicas. [PDF]

Sci Rep
Siratham S, Osathaphan K, Punyapalakul P.   +2 more
europepmc   +1 more source

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IAA detection in humic substances

Soil Biology and Biochemistry, 1998
The aim of the work was to verify if humic substances conaine auxin component able to justify its biological activity. To this aim various preparations of anti-IAA antibodies were used. Quantitative determinations of IAA in HS was corried out using an enzyme immunoassay, Phytodetek-IAA.
MUSCOLO A, CUTRUPI S, NARDI, SERENELLA
openaire   +2 more sources

Immobilized humic substances as sorbents

Chemosphere, 2006
A new method was developed for the immobilization of humic substances. Humic acids (HA) immobilized onto different carriers were studied as sorbents for organic and inorganic substances. The sorption isotherms of 4-aminoazobenzene, Crystal Violet, Methylene Green, and flavine mononucleotide on immobilized HA show that pH and salt concentration have a ...
Maris, Klavins, Linda, Eglite, Andris, Zicmanis   +2 more
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Antioxidant Properties of Humic Substances

Environmental Science & Technology, 2012
Humic substances (HS) are heterogeneous, redox-active organic macromolecules. While electron transfer to and from HS under reducing conditions is well investigated, comparatively little is known on the electron donating (i.e., antioxidant) properties of HS under oxic conditions.
Michael, Aeschbacher, Cornelia, Graf, René P, Schwarzenbach, Michael, Sander   +3 more
openaire   +2 more sources

Protein Encapsulation by Humic Substances

Environmental Science & Technology, 2011
Protein encapsulation by natural organic matter is hypothesized to preserve the activity of proteins in terrestrial and aquatic environments. Direct molecular-level evidence for encapsulation of net positively charged proteins lysozyme, trypsin, and ribonuclease A by a diverse set of humic substances (HS) in nanostructured films was collected using a ...
Jeanne E, Tomaszewski, René P, Schwarzenbach, Michael, Sander   +2 more
openaire   +2 more sources

Antiandrogenic activity of humic substances

Science of The Total Environment, 2012
For long, natural organic matter (NOM) composed mainly of humic substances (HS) were regarded as inert in the ecosystems with respect to their possible chemical interaction with exposed organisms. However recently, NOM have been shown to elicit various adverse effects generally attributed to synthetic xenobiotics, including estrogenic effects ...
Michal, Bittner, Nadine, Saul, Christian E W, Steinberg   +2 more
openaire   +2 more sources

Human lung injury following exposure to humic substances and humic-like substances

Environmental Geochemistry and Health, 2017
Among the myriad particles the human respiratory tract is exposed to, a significant number are distinctive in that they include humic substances (HS) and humic-like substances (HULIS) as organic components. HS are heterogeneous, amorphous, organic materials which are ubiquitous occurring in all terrestrial and aqueous environments.
Andrew J. Ghio, Michael C. Madden
openaire   +2 more sources

Humic Substances and Plant Nutrition

1995
Since the studies by Liebig (1856), it is well known that plants, as long as they are adequately supplied with light and mineral nutrients, can live in the absence of the organic and inorganic structural components of the soil. Nowadays the use of hydroponics is popular not only among plant physiologists but also in certain commercial activities.
VARANINI, Zeno, R. PINTON
openaire   +2 more sources