New insights into aggregation and conformational behaviour of humic substances: Application of high resolution ultrasonic spectroscopy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F07%3APU70240" target="_blank" >RIV/00216305:26310/07:PU70240 - 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

New insights into aggregation and conformational behaviour of humic substances: Application of high resolution ultrasonic spectroscopy

Original language description

The potential of high resolution ultrasonic analysis (HRUS) in humic acid colloidal properties research has been demonstrated. Sodium salts of humic acids from soil and lignite showed similar behaviour, supporting the hypothesis that, at both neutral andalkaline pH, they aggregate from very low concentration. The same conclusion can be reached for solutions at high ionic strength. We tried to apply the same procedure as used for the study of micellization and determination of critical micelle concentration of common surfactants. As expected, our experiments did not show the same break as demonstrated on the HRUS records for sodium dodecyl sulfate, at least in the range of measured concentration (i.e. from 0.001 up to 10 g/L). The colloidal state of humic acids in aqueous solution is very sensitive to the presence of other, both charged and neutral, molecules. Aggregation of humic acids can be disturbed or promoted, depending on the concentration, by electrostatic or other weak interac

Czech name

Nový pohled na agregační chování huminových kyselin: aplikace vysoce rozslišovací ultrazvukové spektroskopie

Czech description

Nový pohled na agregační chování huminových kyselin: aplikace vysoce rozslišovací ultrazvukové spektroskopie

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

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

2007

Confidentiality

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

Name of the periodical

ORGANIC GEOCHEMISTRY

ISSN

0146-6380

e-ISSN

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Volume of the periodical

38

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

2098-2110

UT code for WoS article

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EID of the result in the Scopus database

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