title: A central fission pathway in alkylphenol ethoxylate biodegradation.
abstract: A representative alkylphenol Triton X-100 (having 9.5 oxyethylene subunits) was treated over 40 days under the conditions of the continuous flow activated sludge simulation test in a plant with aeration and denitrification chambers. Treated sewage was separated by sequential extraction with ethyl acetate and chloroform. The extracts were analysed by high-performance liquid chromatography-electrospray ionisation-mass spectrometry (HPLC-ESI-MS). Single ion chromatograms of the chloroform extracts showed the presence of neutral, mono- and di-carboxylated poly(ethylene glycols). This is evidence of the central fission of alkylphenol ethoxylates (APE). Simultaneously, the APE having omega-carboxylated oxyethylene chains were identified. This is the evidence that apart from central fission, the omega-oxidation oxyethylene chain pathway also occurs.
authors.affiliation: Institute of Chemistry, Poznan University of Technology, ul. Piotrowo 3, PL-60-965 Poznan, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Franska
authors.forename: Rafal
authors.initials: R
authors.lastname: Franski
authors.forename: Andrzej
authors.initials: A
authors.lastname: Szymanski
authors.forename: Zenon
authors.initials: Z
authors.lastname: Lukaszewski
mesh_terms: D001673:Biodegradation, Environmental; D002851:Chromatography, High Pressure Liquid; D013058:Mass Spectrometry; D017830:Octoxynol / Q000378:metabolism*; D010084:Oxidation-Reduction; D013501:Surface-Active Agents / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D013501:Surface-Active Agents; D017830:Octoxynol