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

Química Nova

Rezende, Maria Olímpia Oliveira¹  Moraes, Solange Leite de¹ 

关键词: spectroscopy and conductimetric determination;    critical micelle concentration;    humic acids.;   

DOI  :  10.1590/S0100-40422004000500004

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown