title: The stable aryl hydrocarbon receptor agonist potency of United Kingdom Continental Shelf (UKCS) offshore produced water effluents.
abstract: The in vitro aryl hydrocarbon receptor (AhR) agonist potency of offshore produced water effluents, collected from the United Kingdom Continental Shelf, was determined using the dioxin responsive (DR)-chemically activated luciferase expression (CALUX) assay. Octadecylsilane (C18) solid phase extraction (SPE) extracts of produced water were exposed to DR-CALUX cells for 24h in order to investigate the contribution in potency from compounds that are stable to metabolism by the CALUX cells during exposure. The stable AhR agonist potency determined over 24h was highly variable and ranged from 1 to 430 ng TCDD TEQ(CALUX)l(-1). These data reflect the highly variable composition of produced water discharges from different production fields. It is recommended that further work be performed to characterise the full range of stable dioxin like AhR agonists present in offshore produced water discharges using techniques such as bioassay-directed analysis.
authors.affiliation: Centre for Environment, Fisheries and Aquaculture Science, Burnham Laboratory, Burnham-on-Crouch, Essex CM0 8HA, UK.
authors.forename: Mark R
authors.initials: MR
authors.lastname: Hurst
authors.forename: Yin L
authors.initials: YL
authors.lastname: Chan-Man
authors.forename: Jan
authors.initials: J
authors.lastname: Balaam
authors.forename: John E
authors.initials: JE
authors.lastname: Thain
authors.forename: Kevin V
authors.initials: KV
authors.lastname: Thomas
mesh_terms: D002138:Calibration; D004147:Dioxins / Q000032:analysis*; D008156:Luciferases; D000072317:Polychlorinated Dibenzodioxins / Q000737:chemistry; D018336:Receptors, Aryl Hydrocarbon / Q000819:agonists*; D018675:Toxicity Tests / Q000379:methods; D006113:United Kingdom; D014865:Waste Disposal, Fluid; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004147:Dioxins; D000072317:Polychlorinated Dibenzodioxins; D018336:Receptors, Aryl Hydrocarbon; D014874:Water Pollutants, Chemical; D014867:Water; D008156:Luciferases