title: Simultaneous spectrophotometric determination of binary mixtures of surfactants using continuous wavelet transformation.
abstract: This work presents a simple, rapid, and novel method for simultaneous determination of binary mixtures of some surfactants using continuous wavelet transformation. The method is based on the difference in the effect of surfactants Cetyltrimethylammoniumbromide (CTAB), dodecyl trimethylammonium bromide (DTAB), cetylpyridinium bromide (CPB) and TritonX-100 (TX-100) on the absorption spectra of complex of Beryllium with Chrome Azurol S (CAS) at pH 5.4. Binary mixtures of CTAB-DTAB, DTAB-CPB and CTAB-TX-100 were analyzed without prior separation steps. Different mother wavelets from the family of continuous wavelet transforms were selected and applied under the optimal conditions for simultaneous determinations. The proposed methods, under the working conditions, were successfully applied to simultaneous determination of surfactants in hair conditioner and mouthwash samples.
authors.affiliation: Faculty of Chemistry, Bu-Ali Sina University, Hamadan 65174, Iran. afkhami@basu.ac.ir
authors.forename: Abbas
authors.initials: A
authors.lastname: Afkhami
authors.forename: Davood
authors.initials: D
authors.lastname: Nematollahi
authors.forename: Tayyebeh
authors.initials: T
authors.lastname: Madrakian
authors.forename: Maryam
authors.initials: M
authors.lastname: Abbasi-Tarighat
authors.forename: Mitra
authors.initials: M
authors.lastname: Hajihadi
mesh_terms: D001608:Beryllium / Q000737:chemistry; D000077286:Cetrimonium; D002593:Cetrimonium Compounds; D002594:Cetylpyridinium; D003358:Cosmetics / Q000737:chemistry; D062385:Hydroxybenzoates / Q000737:chemistry; D008722:Methods; D017830:Octoxynol; D000644:Quaternary Ammonium Compounds; D013053:Spectrophotometry / Q000379:methods*; D013501:Surface-Active Agents / Q000032:analysis*
chemical_list: D002593:Cetrimonium Compounds; D003358:Cosmetics; D062385:Hydroxybenzoates; D000644:Quaternary Ammonium Compounds; D013501:Surface-Active Agents; C013912:decyltrimethylammonium; C015076:chrome azurol S; D017830:Octoxynol; D002594:Cetylpyridinium; D001608:Beryllium; D000077286:Cetrimonium