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BIBTEX RIS

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

2004; Brazilian Chemical Society; Volume: 27; Issue: 5 Linguagem: Inglês

10.1590/s0100-40422004000500004

ISSN

1678-7064

Autores

Solange Leite de Moraes, Maria Olímpia Oliveira Rezende,

Tópico(s)

Environmental Chemistry and Analysis

Resumo

CONDUCTIMETRIC MEASUREMENTS.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.

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