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Characterization Of Non-ionic Detergents Of The Polyethoxylated Type From Water Systems
Published 1978 · Chemistry
Abstract Amberlite XAD-4 macroreticular resin was studied as a possible extractant for trace non-ionic detergents of the polyethoxylated type present in water systems from domestic and industrial use. Polyethylene glycols were also included in the investigation, as they are important biodegradation products of the detergents. A number of model compounds, reflecting the expected molecular weight range of the polyethoxylated compounds, were obtained, and distilled water solutions of these used for the evaluation. The XAD-4 resin gave good results for the non-ionic detergents, achieving 80–100% adsorption efficiencies at concentrations as low as 10 ppb with flow-rates of 100 ml min−1. Similar high adsorption efficiencies were obtained for the polyethylene glycols, except for molecular weights below 300, the lowest molecular weight oligomers (the dimer and the trimer) showing little or no adsorption.