title: Method development for trace analysis of heteroaromatic compounds in contaminated groundwater.
abstract: An analytical method providing high sensitivity (limit of quantitation of 50 ng/l) with acceptable reproducibility (mean R.S.D. 19%) has been developed for determining heteroaromatic compounds in creosote-contaminated groundwater. The best technique (highest recovery and reproducibility) found between liquid-liquid extraction using either dichloromethane, diethyl ether or pentane and solid-phase extraction with reversed-phase bonded columns, was the classical liquid extraction with dichloromethane from weak basic solutions and GC-MS (selective ion monitoring) analysis of concentrated extracts.
authors.affiliation: Institute of Environmental Science and Engineering, Technical University of Denmark, Lyngby, Denmark.
authors.forename: S S
authors.initials: SS
authors.lastname: Johansen
authors.forename: A B
authors.initials: AB
authors.lastname: Hansen
authors.forename: H
authors.initials: H
authors.lastname: Mosbaek
authors.forename: E
authors.initials: E
authors.lastname: Arvin
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012997:Solvents; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D012997:Solvents; D014874:Water Pollutants, Chemical; D010100:Oxygen