title: Application of solid-phase microextraction method to determine bioavailable fraction of PAH in hazardous waste.
abstract: The solid-phase microextraction (SPME) method was developed to determine PAH free dissolved concentration (C(free)) in field leachates from hazardous waste disposal. SPME technique, involving a 100-μm polydimethylsiloxane (PDMS) fiber coupled to GC-MS was optimized for determination of C(free). The following PAH were found in bioavailable form: acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, with C(free) varying between 2.38 and 62.35 ng/L. Conventional solvent extraction was used for measurement of total concentration (C(total)) in the same samples, and ranging from 1.26 to 77.56 μg/L. Determining C(free) of the hydrophobic toxic pollutants could give useful information for risk assessment of the hazardous waste.
authors.affiliation: National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia. jekaterina.jefimova@kbfi.ee
authors.forename: J
authors.initials: J
authors.lastname: Jefimova
authors.forename: N
authors.initials: N
authors.lastname: Irha
authors.forename: R
authors.initials: R
authors.lastname: Mägi
authors.forename: U
authors.initials: U
authors.lastname: Kirso
mesh_terms: D000873:Anthracenes / Q000032:analysis; D004129:Dimethylpolysiloxanes / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D005449:Fluorenes / Q000032:analysis; D006256:Hazardous Waste / Q000032:analysis* / Q000706:statistics & numerical data; D010616:Phenanthrenes / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D011721:Pyrenes / Q000032:analysis; D052617:Solid Phase Microextraction / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000873:Anthracenes; D004129:Dimethylpolysiloxanes; D005449:Fluorenes; D006256:Hazardous Waste; D010616:Phenanthrenes; D011084:Polycyclic Aromatic Hydrocarbons; D011721:Pyrenes; D014874:Water Pollutants, Chemical; C007738:fluoranthene; C041509:fluorene; C031181:phenanthrene; C013830:baysilon; C034020:anthracene