title: Monitoring of a wide range of organic micropollutants on the Portuguese coast using plastic resin pellets.
abstract: We analyzed polychlorinated biphenyls (PCBs), dichlorodiphenyl dichloroethane and its metabolites, hexachlorocyclohexanes (HCHs), polycyclic aromatic hydrocarbons (PAHs), and hopanes, in plastic resin pellets collected from nine locations along the Portuguese coast. Concentrations of a sum of 13 PCBs were one order of magnitude higher in two major cities (Porto: 307 ng/g-pellet; Lisboa: 273 ng/g-pellet) than in the seven rural sites. Lower chlorinated congeners were more abundant in the rural sites than in the cities, suggesting atmospheric dispersion. At most of the locations, PAH concentrations (sum of 33 PAH species) were ∼100 to ∼300 ng/g-pellet; however, three orders of magnitude higher concentrations of PAHs, with a petrogenic signature, were detected at a small city (Sines). Hopanes were detected in the pellets at all locations. This study demonstrated that multiple sample locations, including locations in both urban and remote areas, are necessary for country-scale pellet watch.
authors.affiliation: Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
authors.forename: Kaoruko
authors.initials: K
authors.lastname: Mizukawa
authors.forename: Hideshige
authors.initials: H
authors.lastname: Takada
authors.forename: Maki
authors.initials: M
authors.lastname: Ito
authors.forename: Yeo Bee
authors.initials: YB
authors.lastname: Geok
authors.forename: Junki
authors.initials: J
authors.lastname: Hosoda
authors.forename: Rei
authors.initials: R
authors.lastname: Yamashita
authors.forename: Mahua
authors.initials: M
authors.lastname: Saha
authors.forename: Satoru
authors.initials: S
authors.lastname: Suzuki
authors.forename: Carlos
authors.initials: C
authors.lastname: Miguez
authors.forename: João
authors.initials: J
authors.lastname: Frias
authors.forename: Joana Cepeda
authors.initials: JC
authors.lastname: Antunes
authors.forename: Paula
authors.initials: P
authors.lastname: Sobral
authors.forename: Isabelina
authors.initials: I
authors.lastname: Santos
authors.forename: Cristina
authors.initials: C
authors.lastname: Micaelo
authors.forename: Ana Maria
authors.initials: AM
authors.lastname: Ferreira
mesh_terms: D001267:Atlantic Ocean; D004784:Environmental Monitoring / Q000379:methods*; D001556:Hexachlorocyclohexane / Q000032:analysis*; D010969:Plastics / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D011174:Portugal; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D010969:Plastics; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane; D011078:Polychlorinated Biphenyls