Determinação da concentração micelar crítica de ácidos húmicos por medidas de condutividade e espectroscopia

Solange Leite de Moraes; Maria Olímpia Oliveira Rezende

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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Determination of the critical micelle concentration of humic acids by spectroscopy and conductimetric measurements

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Author(s):	Solange Leite de Moraes ; Maria Olímpia Oliveira Rezende Total Authors: 2
Document type:	Journal article
Source:	Química Nova; v. 27, n. 5, p. 701-705, 2004-10-00.
Abstract
The aim of this study was the determination of the critical micelle concentration (CMC) of the sodium dodecyl sulfate (SDS) surfactant using spectroscopic and conductimetric determinations and to compare these methodologies in the determination of the CMC of different humic acids (HA). The CMC obtained by conductimetric determination was satisfactory. By spectroscopic determination two values of the CMC were obtained for HA. These values can be to due the intra and intermolecular interactions in the HA structure. (AU)

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