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- W1995490023 abstract "This paper describes the development of a guantitative method for direct and simultaneous determination of three frequently encountered surfactants, amphoteric (cocoamphoacetate, CAA), anionic (sodium laureth sulfate, SLES), and nonionic (alcohol ethoxylate, AE) using a reversed-phase C18 HPLC coupled with an ESI ion-trap mass spectrometer (MS). Chemical composition, ionization characteristics and fragmentation pathways of the surfactants are presented. Positive ESI was effective for all three surfactants in agueous methanol buffered with ammonium acetate. The method enables rapid determinations in small sample volumes containing inorganic salts (up to 3.5 g L−1) and multiple classes of surfactants with high specificity by applying surfactant specific tandem mass spectrometric strategies. It has dynamic linear ranges of 2–60, 1.5–40, 0.8–56 mg L−1 with R2 egual or greater than 0.999, 0.98 and 0.999 (10 μL injection) for CAA, SLES, and AE, respectively." @default.
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- W1995490023 date "2005-01-01" @default.
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- W1995490023 title "Simultaneous quantification of poly-dispersed anionic, amphoteric and nonionic surfactants in simulated wastewater samples using C18 high-performance liquid chromatography–quadrupole ion-trap mass spectrometry" @default.
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- W1995490023 doi "https://doi.org/10.1016/j.chroma.2004.11.038" @default.
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