Complex formation of Np(V) with humic acid and polyacrylic acid

SummaryIn order to understand the migration behavior of radionuclides in the underground, it is also important to estimate the effect of the competing cations originally present in the groundwater. In this connection, the complexation of Ca(II) with Aldrich humic acid has been examined. For the study at trace concentrations (∼10

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Complex Formation of Fe(II) with Humic Acid and Polyacrylic Acid

Journal of Nuclear Fuel Cycle and Environment ◽

10.3327/jnuce.9.21 ◽

2002 ◽

Vol 9 (1) ◽

pp. 21-28 ◽

Cited By ~ 4

Author(s):

Budi Setiawan ◽

Kouichi Tanaka ◽

Yuichi Niibori ◽

Osamu Tochiyama

Keyword(s):

Humic Acid ◽

Complex Formation ◽

Polyacrylic Acid

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Aluminium ions at polyelectrolyte interfaces. I. Mechanism of polyacrylic acid/aluminium oxide and humic acid/kaolinite complex formation

Colloid & Polymer Science ◽

10.1007/s003960100482 ◽

2001 ◽

Vol 279 (7) ◽

pp. 629-637 ◽

Cited By ~ 1

Author(s):

E. Pefferkorn ◽

E. Ringenbach ◽

F. Elfarissi

Keyword(s):

Humic Acid ◽

Complex Formation ◽

Polyacrylic Acid ◽

Aluminium Oxide

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Complex formation of Eu(III) with humic acid and polyacrylic acid

Radiochimica Acta ◽

10.1524/ract.2002.90.9-11_2002.569 ◽

2002 ◽

Vol 90 (9-11) ◽

Cited By ~ 15

Author(s):

Takumi Kubota ◽

Osamu Tochiyama ◽

K. Tanaka ◽

Yuichi Niibori

Keyword(s):

Humic Acid ◽

Solvent Extraction ◽

Complex Formation ◽

Comparative Study ◽

Polyacrylic Acid ◽

Extraction Method ◽

Solvent Extraction Method ◽

Polyelectrolyte Effect

SummaryWith the intention of estimating the effect of the heterogeneous composition in the humic acid separately from its polyelectrolyte effect, comparative study on the interaction of Eu(III) with humic acid and polyacrylic acid has been carried out by the solvent extraction method with 10

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The Singular Molecular Conformation of Humic Acids in Solution Influences Their Ability to Enhance Root Hydraulic Conductivity and Plant Growth

Molecules ◽

10.3390/molecules26010003 ◽

2020 ◽

Vol 26 (1) ◽

pp. 3

Author(s):

Maite Olaetxea ◽

Veronica Mora ◽

Roberto Baigorri ◽

Angel M. Zamarreño ◽

Jose M. García-Mina

Keyword(s):

Polyethylene Glycol ◽

Humic Acid ◽

Hydraulic Conductivity ◽

Plant Growth ◽

Polyacrylic Acid ◽

Molecular Conformation ◽

Water Solution ◽

Biological Effects ◽

Root Hydraulic Conductivity ◽

Molecular Systems

Some studies have reported that the capacity of humic substances to improve plant growth is dependent on their ability to increase root hydraulic conductivity. It was proposed that this effect is directly related to the structural conformation in solution of these substances. To study this hypothesis, the effects on root hydraulic conductivity and growth of cucumber plants of a sedimentary humic acid and two polymers—polyacrylic acid and polyethylene glycol—presenting a molecular conformation in water solution different from that of the humic acid have been studied. The results show that whereas the humic acid caused an increase in root hydraulic conductivity and plant growth, both the polyacrylic acid and the polyethylene glycol did not modify plant growth and caused a decrease in root hydraulic conductivity. These results can be explained by the different molecular conformation in water solution of the three molecular systems. The relationships between these biological effects and the molecular conformation of the three molecular systems in water solution are discussed.

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