title: Determination of alkylphenols and alkylphenol polyethoxylates by reversed-phase high-performance liquid chromatography and solid-phase extraction.
abstract: A simple, accurate and reproducible reversed-phase high-performance liquid chromatography (HPLC) method was developed for the separation and characterisation of alkylphenols (APs) and alkylphenol polyethoxylates (APEOs), using a C18 octadecyl silica (ODS) column. APs and each APEO oligomer were separated successfully within a reasonable time without gradient elution. An excellent resolution was obtained, even for mixtures of APs and low EO number APEOs, which are otherwise difficult to separate using conventional normal-phase HPLC methods. This method, combined with solid-phase extraction, was highly applicable for the simultaneous determination of alkylphenols and alkylphenol ethoxylates in real samples.
authors.affiliation: Division of Material Science, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan. takuma_ta@hotmail.com
authors.forename: Takuma
authors.initials: T
authors.lastname: Takasu
authors.forename: Alexander
authors.initials: A
authors.lastname: Iles
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Hasebe