title: A rapid, sensitive screening test for polycyclic aromatic hydrocarbons applied to Antarctic water.
abstract: We describe a rapid, sensitive, fluorescence screening test for polycyclic aromatic hydrocarbons in water samples that avoids more costly time-consuming methods. The screening test works by detecting benzo[a]pyrene. It runs without the need for any pre-concentration step, thus rendering it suitable for routine use in water-quality-control laboratories. The test recognizes contaminated samples rapidly (150 s) and inexpensively with a cut-off level of 10 ng l(-1), which is the value that the European Union and World Health Organization (WHO) have laid down in its assessment of the quality of water for human consumption. This was first ascertained by analysing tap and waste-water samples before studying environmental water samples from the Antarctic region. The reliability of the screening test was 2% false positives and 4% false negatives in 200 samples of tap and waste-water. The applicability was confirmed by the fact that the predictions of the screening test coincided exactly with results obtained with gas chromatography-mass spectrometry assays. We also discuss the polluted Antarctic samples and the possible sources of the contamination involved.
authors.affiliation: Department of Analytical Chemistry, University of Granada, c/Fuentenueva s/n., E-18071 Granada, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Valero-Navarro
authors.forename: J F
authors.initials: JF
authors.lastname: Fernández-Sánchez
authors.forename: A L
authors.initials: AL
authors.lastname: Medina-Castillo
authors.forename: F
authors.initials: F
authors.lastname: Fernández-Ibáñez
authors.forename: A
authors.initials: A
authors.lastname: Segura-Carretero
authors.forename: J M
authors.initials: JM
authors.lastname: Ibáñez
authors.forename: A
authors.initials: A
authors.lastname: Fernández-Gutiérrez
mesh_terms: D000864:Antarctic Regions; D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013050:Spectrometry, Fluorescence; D018707:Volcanic Eruptions; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical