title: Analysis of nonylphenol isomers in a technical mixture and in water by comprehensive two-dimensional gas chromatography-mass spectrometry.
abstract: Nonylphenol (NP) is a degradation product of nonylphenol polyethoxylate surfactants and has been reported to occur in water and sediments from urban areas. Technical NP is composed of several structural isomers, and conventional gas chromatography-mass spectrometry techniques have tentatively identified up to 22 components. Isolation and characterization of individual isomers in a technical NP mixture is important, because of the differences in estrogenic and bioaccumulation potential among the isomers. In this study, comprehensive two-dimensional gas chromatography (GC x GC) combined with mass spectrometry (MS) enabled tentative identification of 102 components of NP from a technical mixture. GC x GC-MS was also used to quantify two NP isomers in river water samples. This is the first study to use GC x GC-MS to characterize NP isomers in technical mixtures and for quantitative analysis of NP in river waters.
authors.affiliation: Gerstel K.K, 2-13-18, Nakane, Meguro-ku, Tokyo 152-0031, Japan.
authors.forename: Teruyo
authors.initials: T
authors.lastname: Ieda
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Horii
authors.forename: Gert
authors.initials: G
authors.lastname: Petrick
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Yamashita
authors.forename: Nobuo
authors.initials: N
authors.lastname: Ochiai
authors.forename: Kurunthachalam
authors.initials: K
authors.lastname: Kannan
mesh_terms: D002138:Calibration; D002849:Chromatography, Gas / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods*; D004967:Estrogens / Q000032:analysis; D005026:Ethylene Glycols / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D007536:Isomerism; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D019800:Phenol / Q000032:analysis*; D010636:Phenols / Q000737:chemistry* / Q000494:pharmacology; D015203:Reproducibility of Results; D045483:Rivers; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply
chemical_list: D004967:Estrogens; D005026:Ethylene Glycols; D010636:Phenols; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D014867:Water; D019800:Phenol; C025256:nonylphenol