title: Concentrations of polychlorinated biphenyls in water from US Lake Ontario tributaries between 2004 and 2008.
abstract: Research on the environmental fate and transport of PCBs in Lake Ontario basin depends, among other aspects, on the availability of representative data sets for upstream sources, but data are lacking for most US Lake Ontario tributaries. In this study, water samples were collected between September 2004 and October 2008 from five tributaries and were analyzed for 209 polychlorinated biphenyls (PCB) with high-resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS) following EPA Method 1668 A. Total PCB concentrations ranged between 0.31 and 42.75 ng L(-1). Congeners between Di and Hexa PCBs accounted between 70 and 99% of the total PCB. The tributary with highest PCB concentrations presented similar pattern and percentage levels to Aroclor 1242. Total average loads for the sampling events ranged between 1.85 g d(-1) and 59.08 g d(-1). PCB concentrations were evaluated against other variables and other studies (including different matrices) to better understand their transport. The methodology used is reliable to assess PCB contamination in surface water.
authors.affiliation: United States Environmental Protection Agency, Region 2, Division of Environmental Science and Assessment, 2890 Woodbridge Avenue, Edison, NJ 08837, USA. Oliveira.Tiago@epa.gov
authors.forename: Tiago
authors.initials: T
authors.lastname: Oliveira
authors.forename: Gregory
authors.initials: G
authors.lastname: Santacroce
authors.forename: Richard
authors.initials: R
authors.lastname: Coleates
authors.forename: Stephen
authors.initials: S
authors.lastname: Hale
authors.forename: Paula
authors.initials: P
authors.lastname: Zevin
authors.forename: Barbara
authors.initials: B
authors.lastname: Belasco
mesh_terms: D004784:Environmental Monitoring; D005618:Fresh Water / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006114:Great Lakes Region; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls