Aggregation of humic an fulvic acids in diluted solutions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F09%3APU83579" target="_blank" >RIV/00216305:26310/09:PU83579 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Aggregation of humic an fulvic acids in diluted solutions

Original language description

The aggregation of humic substances sodium salts was studied using high resolution ultrasonic spectroscopy. Results confirmed earlier statements about progressive aggregation of humic substances at concentration 0.001 g/L and revealed that there is onlysmall difference in behavior of humic and fulvic acids. Obtained dependences of increment of ultrasonic velocity were fitted by super-exponential function and correlation of obtained coefficients showed the importance of hydrophobic structures in interactions stabilizing humic supramolecular structures. In contrast, polar oxygen-containing groups were shown to have minor influence at lower concentrations. For further considerations the fractal analysis was used and revealed that around concentration 1 g/L, fractal dimension reached a constant value suggesting possible switch between mechanisms of humic substances aggregation.

Czech name

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Czech description

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Type

C - Chapter in a specialist book

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Book/collection name

ENERGY, ENVIRONMENT, ECOSYSTEMS, DEVELOPMENT and LANDSCAPE ARCHITECTURE

ISBN

978-960-474-125-0

Number of pages of the result

6

Pages from-to

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Number of pages of the book

369

Publisher name

WSEAS Press

Place of publication

Řecko

UT code for WoS chapter

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