Results 121 to 130 of about 23,723 (227)

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

The Sorption of Th(IV) Ions onto Montmorillonite: The Effect of pH, Ionic Strength and Fulvic Acid

open access: yesAdsorption Science & Technology, 2006
Thorium was considered as a chemical analogue of other tetravalent actinides. The sorption of Th(IV) ions onto montmorillonite and its cross-linked counterpart in the presence/absence of fulvic acid was investigated via a batch technique as a function of
Lei Chen   +3 more
doaj   +1 more source

Characterization of fulvic acid fractions of dissolved organic matter during ice-out in a hyper-eutrophic, coastal pond in Antarctica

open access: yesEnvironmental Research Letters, 2013
Dissolved humic material (HDOM) is ubiquitous to all natural waters and its source material influences its chemical structure, reactivity, and bioavailability.
Kaelin M Cawley   +9 more
doaj   +1 more source

The effect of NOM characteristics and membrane type on microfiltration performance [PDF]

open access: yes, 2007
Efforts to understand and predict the role of different organic fractions in the fouling of low-pressure membranes are presented. Preliminary experiments with an experimental apparatus that incorporates automatic backwashing and filtration over several ...
Bolto, Brian   +3 more
core  

\u3csup\u3e13\u3c/sup\u3eC NMR Analysis of Biologically Produced Pyrene Residues by \u3cem\u3eMycobacterium\u3c/em\u3e sp. KMS in the Presence of Humic Acid [PDF]

open access: yes, 2007
Cultures of the pyrene degrading Mycobacterium sp. KMS were incubated with [4-13C]pyrene or [4,5,9,10-14C]pyrene with and without a soil humic acid standard to characterize the chemical nature of the produced residues and evaluate the potential for ...
Holz, Richard C.   +2 more
core   +1 more source

The effect of the addition of fulvic acid and straw water on the efficiency of arsenic uptake from groundwater by vetiveria zizanioides [PDF]

open access: yes, 2013
University of Technology, Sydney. Faculty of Engineering and Information Technology.The aim of this research project was to investigate the efficiency of fulvic acid or straw water as an amendment to enhance the uptake of arsenic from groundwater by ...
Zhao, Z
core  

Photoreductive Dissolution of Iron Oxides Trapped in Ice and Its Environmental Implications [PDF]

open access: yes, 2010
The availability of iron has been thought to be a main limiting factor for the productivity of phytoplankton and related with the uptake of atmospheric CO_2 and algal blooms in fresh and sea waters. In this work, the formation of bioavailable iron (Fe(II)
Choi, Wonyong   +4 more
core   +1 more source

Identification of the fractions responsible for plant root elongation-promoting and antioxidant activities of humic product extracted from composted wood thinnings

open access: yesChemical and Biological Technologies in Agriculture
Background HS-2®Pro, a humic product, is produced from composted thinnings of coniferous trees and is commercially available as a biostimulant. In this study, it was fractionated into humic acid (HA), hydrophobic fulvic acid (FA), hydrophilic FA, and ...
Masakazu Aoyama, Yasushi Kojima
doaj   +1 more source

Home - About - Disclaimer - Privacy