Effect of perfluorinated surfactant as additive of background electrolyte for capillary electrophoresis of inorganic cations

• Autorzy: Mori M. , Ikeda T. , Itabashi H.
• Języki publikacji: EN

Abstrakty

EN

This study reports the effect of a nonionic perfluorinated surfactant, N-polyoxyethylene-N-propyl perfluorooctane sulfonamide (PFOSA), as additive of background electrolyte on capillary electrophoresis (CE) of common inorganic cations. The association constants (Kass) for PFOSA estimated from the electrophoretic mobility of analyte cations were the order of Mg²⁺ > Ca2+ > Sr2+ > K+ ≈ NH4+ > Na+ ≈ Li+. The Kass values were larger than those for zwitterionic and nonionic surfactants with hydrocarbon moiety. Use of PFOSA made another essential contribution to the determination of inorganic cations in a protein-containing sample. This was considered because high solubility of PFOSA for proteins functioned as suppressor for protein adsorption to the capillary wall. Four inorganic cations, Na+, K+, Mg²⁺, and Ca²⁺, in human saliva sample were successfully determined by sample injection without any pretreatments except for filtration and dilution.

Słowa kluczowe

EN

nonionic perfluorinated surfactant; association constant; inorganic cations; capillary electrophoresis

• Wydawca: University of Silesia in Katowice ; Akademiai Kiado
• Czasopismo: Acta Chromatographica
• Rocznik: 2012
• Tom: Vol. 24, no. 4
• Strony: 529--542
• Opis fizyczny: Bibliogr. 38 poz., rys., tab.

Twórcy

autor

Mori M.

• Gunma University Department of Chemistry and Chemical Biology, Graduate School of Engineering 1-5-1 Tenjin-cho Kiryu 376-8515 Japan

autor

Ikeda T.

• Gunma University Department of Chemistry and Chemical Biology, Graduate School of Engineering 1-5-1 Tenjin-cho Kiryu 376-8515 Japan

autor

Itabashi H.

• Gunma University Department of Chemistry and Chemical Biology, Graduate School of Engineering 1-5-1 Tenjin-cho Kiryu 376-8515 Japan

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