Chromatographic behavior and characterization of polydisperse surfactants using Ultra-High-Performance Liquid Chromatography hyphenated to High-Resolution Mass Spectrometry

Abstract

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Corona charged aerosol detector non-uniform response factors of purified alcohol ethoxylated homologues using liquid chromatography

“…The HPLC conditions were selected to have a maximum resolution between homologues and the resulting HPLC-CAD chromatogram is given in Figure 2. As reported by Dufour et al in HILIC mode retention of oligomers increased according to the number of ethylene oxide units [28]. Throughout the run, and especially in the first ten minutes, the peaks were distorted.…”

“…The column was a HILIC Bare Silica column (150 mm, 4.6 mm, 2.6 µm) from ThermoFisher Scientific. Analytical conditions were optimized in our previous published work, but they are recapped as follows [28].…”

“…It is also function of the sample matrix and eluent composition. As nonionic surfactants do not have native charges, unlike anionic or cationic surfactants, their ionization is obtained by adduct formation [28]. Moreover, RI, MS, UV-Vis and FL detectors are concentration-dependent.…”

Impact of the Oil Matrix on Anionic and Nonionic Surfactant Separation Using Ultra-High-Performance Liquid Chromatography Hyphenated to High-Resolution Mass Spectrometry

“…Crude oil was supplied by TOTAL S.A.. Brij®C10 (Brij, Mn 683) and glycolic acid ethoxylate lauryl ether (Carboxylate, Mn 360) were purchased from Sigma Aldrich (Saint-Quentin-Fallavier, France). These surfactants have already been used for retention behavior investigations 26 and their composition was verified by HRMS. Their mass spectra are provided as supplementary data (Figure S1).…”

“…The analytical method used in this study was developed previously by Dufour et al 26 Carboxylates. The retention time, peak area, and their relative standard deviation (RSD) were computed from EIC.…”