Microanalysis of Alkyl Poly (oxyethylene) Ethers by HPLC

Abstract

Analysis of alkyl poly (oxyethylene) ethers was carried out by HPLC. Nonionic surfactants were well separated regardless of the distribution of the adducted number of ethylene oxides to give chromatographic peaks according to alkyl chain length under certain rigidly controlled eluent conditions. Moreover, the analytical sensitivity of nonionic surfactants with solvent extraction became 20 times without solvent extraction.
This method should thus prove particularly suited for the analysis of nonionic surfactants in aqueous solution because in view of its simplicity and rapidity of performances.