Assessment of perfluorinated compounds (PFCs) in plasma of bottlenose dolphins from two southeast US estuarine areas: Relationship with age, sex and geographic locations

National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, 219 Fort Johnson Road, Charleston, SC 29412-9110, USA.
Marine Pollution Bulletin (Impact Factor: 2.79). 11/2011; 64(1):66-74. DOI: 10.1016/j.marpolbul.2011.10.022
Source: PubMed

ABSTRACT Plasma PFCs were measured in 157 bottlenose dolphins (Tursiops truncatus) sampled from two US southeast Atlantic sites (Charleston (CHS), SC and Indian River Lagoon (IRL), FL) during 2003-2005. ∑PFCs, perfluoroalkyl carboxylates (∑PFCAs), perfluoroalkyl sulfonates (∑PFSAs) and individual compounds were significantly higher in CHS dolphins for all age/sex categories compared to IRL dolphins. Highest ∑PFCs concentrations occurred in CHS juvenile dolphins (2340 ng/g w.w.); significantly higher than found in adults (1570 ng/g w.w. males; 1330 ng/g w.w. females). ∑PFCAs were much greater in CHS dolphins (≈ 21%) compared to IRL dolphins (≈ 7%); ∑PFSAs were 79% in CHS dolphins versus 93% in IRL dolphins. PFOS, the dominant compound, averaged 72% and 84%, respectively, in CHS and IRL dolphins. Decreasing PFC levels occurred with age on the bioaccumulation of PFCs in both sites. These observations suggest PFC accumulation in these two dolphin populations are influenced by site-specific exposures with significantly higher levels in CHS dolphins.

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    • "PFAS are ubiquitous in river water, oceans, sediment, soil, and tissues of wildlife and humans (Ahrens et al., 2010a; Higgins et al., 2005;Wang et al., 2013; Giesy and Kannan, 2001; Bao et al., 2010a; Kannan et al., 2001, 2002a,b). They are potentially harmful to fresh water and marine mammals (Ishibashi et al., 2008) and have potential adverse effects in wildlife species (Hoff et al., 2005; Fair et al., 2012; Beach et al., 2005; Newsted et al., 2005, 2008; Giesy et al., 2009). Sediment is an important sink and reservoir of persistent organic pollutants and has a large impact on their distribution, transportation, and fate in the aquatic environment (Ahrens et al., 2009; Yang et al., 2011). "
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