Reactions of fulvic acid with metal ions

1981 ◽  
Vol 15 (1) ◽  
Author(s):  
M. Schnitzer ◽  
H. Kerndorff
Keyword(s):  
Metal Ions ◽  
Fulvic Acid

Humic Colloid Generation of Transuranic Elements in Groundwater and Their Migration Behaviour

1986 ◽  
Vol 84 ◽  
Author(s):  
J.I. Kim ◽  
G. Buckau ◽  
W. Zhuang
Keyword(s):  
Heavy Metal ◽  
Humic Acid ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Metal Ions ◽  
Fulvic Acid ◽  
Photoacoustic Spectroscopy ◽  
Heavy Metal Ions ◽  
Colloidal Form ◽  
Doc Concentration

AbstractThe generation of humic colloids of Am(III) has been investigated in Gorleben groundwaters containing different amounts of humic substances. Dissolved organic carbon (DOC) in these groundwaters consists mainly of humic acid and fulvic acid, which is present in a colloidal form through aggregation with trace heavy metal ions of groundwater constituents. Concentrations of these heavy metal ions are proportional to the DOC concentration. The generation of Am(III) pseudocolloids through geochemical interactions with humic colloids in different groundwaters is quantified by ultrafiltration as well as ultracentrifugation by the aid of radiometric concentration measurements. The speciation of dissolved Am(III) species in groundwaters is carried out by laser induced photoacoustic spectroscopy (LPAS).

Complexing capacity of soil fulvic acid for Cu2+, Cd2+, Mn2+, Ni2+, and Zn2+ measured by dialysis titration: a model based on soil fulvic acid aggregation

1982 ◽  
Vol 60 (1) ◽  
pp. 1-5 ◽  
Author(s):  
David P. Rainville ◽  
James H. Weber
Keyword(s):  
Metal Ions ◽  
Fulvic Acid ◽  
Metal Ion ◽  
Model Based ◽  
Complexing Capacity ◽  
Dialysis Method ◽  
Metal Ion Speciation

The dialysis method of metal ion speciation is investigated as a technique to determine complexing capacities of soil fulvic acid (SFA) towards Cu2+, Cd2+, Mn2+, Ni2+, and Zn2+, between pH 5 and 7. The complexing capacity values for each metal ion usually increase as pH increases. At the same pH the values for Cd2+, Mn2+, Ni2+, and Zn2+, are similar, but Cu2+ values are significantly higher. The results are interpreted on the basis of a model involving the aggregation of SFA by metal ions, especially Cu2+.

scholarly journals Pembentukan, Karakterisasi Serta Manfaat Asam Humat Terhadap Adsorbsi Logam Berat

SoilREns ◽  
2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Firda Firda ◽  
Oviyanti Mulyani ◽  
Anni Yuniarti
Keyword(s):  
Heavy Metals ◽  
Molecular Weight ◽  
Organic Matter ◽  
Humic Acid ◽  
Dynamic System ◽  
Metal Ions ◽  
Fulvic Acid ◽  
Organic Materials ◽  
Oxide Hydroxide ◽  
Solid Liquid

Soil is a very complex and dynamic system, consisting of the solid, liquid and gas. The solid parts of soil is made from minerals and organic materials (rough and smooth). Organic materials with smooth from is called humic acid. This product is a result from oxidation polimeritation of compounds like phenol, lignin and proteins from plants also from the metabolism of microorganism in the ground. In general, the composition of organic matter is dominated by humin with large, medium and lower of molecular weight. Humic acid has the composition of elements like carbon (40-80%), nitrogen (2-4%), sulfur (1-2%), phospor (0-0,3%) and also oxygen. Humic acid has unique characteristics compared with fulvic acid and humin. One of the most spesific character is the bonding to interact with metal ions, oxide, hydroxide, minerals, organic, and toxic materials.Key words: Adsorbtion, Characterization, Heavy metals, Humic Acid

FULVIC ACID. II. INTERACTION WITH METAL IONS

1974 ◽  
Vol 25 (4) ◽  
pp. 429-437 ◽  
Author(s):  
PATRICK MacCARTHY ◽  
S. O'CINNEIDE
Keyword(s):  
Metal Ions ◽  
Fulvic Acid

Effective Affinity Distribution for the Binding of Metal Ions to a Generic Fulvic Acid in Natural Waters

2009 ◽  
Vol 43 (19) ◽  
pp. 7184-7191 ◽  
Author(s):  
Carlos Rey-Castro ◽  
Sandrine Mongin ◽  
César Huidobro ◽  
Calin David ◽  
José Salvador ◽  
...  
Keyword(s):  
Metal Ions ◽  
Fulvic Acid ◽  
Natural Waters ◽  
Affinity Distribution
Sign in / Sign up

Export Citation Format

Share Document