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Simultaneous determination of amphoteric surfactants in detergents by capillary electrophoresis with indirect UV detection.
J Chromatogr A. 2007 Jan 12; 1139(1):136-42.JC

Abstract

A simple, rapid and simultaneous determination of four types of amphoteric surfactants, i.e., C8, C10, C12, C14, C16 and C18-homologues of alkyldimethylamine N-oxide (AO), alkylamidopropylamine N-oxide (APAO), alkylbetaine (Bt) and alkylamidopropylbetaine (APB), was performed by using capillary electrophoresis (CE) with indirect UV detection. To optimize the separation conditions, effects of pH of background solution (BGS), organic modifier and chromophore for indirect UV detection on the CE separation of the amphoteric compounds were investigated. Addition of 50% (v/v) acetonitrile to the BGS under a lower pH condition brought a good separation performance due to the suppression of micelle formation for the analytes and the adsorption onto the inner surface of the capillary. Under an optimal condition, the 24 amphoteric analytes were completely separated in a single run within 17min. The relative standard deviation of the migration time was ranging from 0.20 to 0.23% and the limit of detection values for AO, APAO, Bt and APB homologues were 10-20, 20, 20-50 and 50microg/mL, respectively. Furthermore, the developed method can provide a high resolution separation of the amphoteric surfactants in commercially available detergents and shampoo without any sample pretreatments.

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Authors+Show Affiliations

Koike R
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan. koike.ryo@anchem.mc.kyoto-u.ac.jp
Kitagawa F
No affiliation info available
Otsuka K
No affiliation info available

MeSH

Electrophoresis, CapillaryHydrogen-Ion ConcentrationMolecular StructureReproducibility of ResultsSpectrophotometry, UltravioletSurface-Active Agents

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17118377

Citation

Koike, Ryo, et al. "Simultaneous Determination of Amphoteric Surfactants in Detergents By Capillary Electrophoresis With Indirect UV Detection." Journal of Chromatography. A, vol. 1139, no. 1, 2007, pp. 136-42.
Koike R, Kitagawa F, Otsuka K. Simultaneous determination of amphoteric surfactants in detergents by capillary electrophoresis with indirect UV detection. J Chromatogr A. 2007;1139(1):136-42.
Koike, R., Kitagawa, F., & Otsuka, K. (2007). Simultaneous determination of amphoteric surfactants in detergents by capillary electrophoresis with indirect UV detection. Journal of Chromatography. A, 1139(1), 136-42.
Koike R, Kitagawa F, Otsuka K. Simultaneous Determination of Amphoteric Surfactants in Detergents By Capillary Electrophoresis With Indirect UV Detection. J Chromatogr A. 2007 Jan 12;1139(1):136-42. PubMed PMID: 17118377.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous determination of amphoteric surfactants in detergents by capillary electrophoresis with indirect UV detection. AU - Koike,Ryo, AU - Kitagawa,Fumihiko, AU - Otsuka,Koji, Y1 - 2006/11/21/ PY - 2006/08/31/received PY - 2006/10/20/revised PY - 2006/10/31/accepted PY - 2006/11/23/pubmed PY - 2007/2/28/medline PY - 2006/11/23/entrez SP - 136 EP - 42 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1139 IS - 1 N2 - A simple, rapid and simultaneous determination of four types of amphoteric surfactants, i.e., C8, C10, C12, C14, C16 and C18-homologues of alkyldimethylamine N-oxide (AO), alkylamidopropylamine N-oxide (APAO), alkylbetaine (Bt) and alkylamidopropylbetaine (APB), was performed by using capillary electrophoresis (CE) with indirect UV detection. To optimize the separation conditions, effects of pH of background solution (BGS), organic modifier and chromophore for indirect UV detection on the CE separation of the amphoteric compounds were investigated. Addition of 50% (v/v) acetonitrile to the BGS under a lower pH condition brought a good separation performance due to the suppression of micelle formation for the analytes and the adsorption onto the inner surface of the capillary. Under an optimal condition, the 24 amphoteric analytes were completely separated in a single run within 17min. The relative standard deviation of the migration time was ranging from 0.20 to 0.23% and the limit of detection values for AO, APAO, Bt and APB homologues were 10-20, 20, 20-50 and 50microg/mL, respectively. Furthermore, the developed method can provide a high resolution separation of the amphoteric surfactants in commercially available detergents and shampoo without any sample pretreatments. SN - 0021-9673 UR - https://www.unboundmedicine.com/medline/citation/17118377/Simultaneous_determination_of_amphoteric_surfactants_in_detergents_by_capillary_electrophoresis_with_indirect_UV_detection_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(06)02096-6 DB - PRIME DP - Unbound Medicine ER -