Temporal Trends in Per- and Polyfluoroalkyl Substances in Bottlenose Dolphins (Tursiops truncatus) of Indian River Lagoon, Florida and Charleston, South Carolina

• Authors: Katie M. Lynch, Emory University; Patricia A. Fair, Medical University of South Carolina; Magali Houde, Environment & Climate Change Canada; Derek C.G. Muir, Environment & Climate Change Canada; Kurunthachalam Kannan, New York State Department of Health; Gregory D. Bossart, Georgia Aquarium; Scott Bartell, Emory University; Matthew Gribble, Emory University
• Journal Title: ENVIRONMENTAL SCIENCE & TECHNOLOGY
• Volume: Volume 53, Number 24
• Publisher: AMER CHEMICAL SOC | 2019-12-17, Pages 14194-14203
• Type of Work: Article | Post-print: After Peer Review
• Publisher DOI: http://doi.org/10.1021/acs.est.9b04585
• Subjects: Engineering, Environmental; Engineering, Biomedical
• Keywords: Science & Technology; Technology; Life Sciences & Biomedicine; Engineering, Environmental; Environmental Sciences; Engineering; Environmental Sciences & Ecology; PERFLUOROALKYL SUBSTANCES; PERFLUORINATED COMPOUNDS; PERFLUOROOCTANE SULFONATE; HARBOR PORPOISES; LIFE-HISTORY; PFASS; AREAS; WATER; ACIDS; PFCS

Abstract

Temporal trens in plasma concentrations of per- an polyfluoroalkyl substances (PFAS) in free-ranging bottlenose olphins (Tursiops truncatus) inhabiting two geographic areas: Inian River Lagoon, Floria over the years 2003-2015 an the waters surrouning Charleston, South Carolina over 2003-2013, were examine. Nine PFAS met the inclusion criteria for analysis base on percent of values below level of etection an sampling years. Proportionate percentiles parametric quantile regression assuming lognormal istributions was use to estimate the average ratio of PFAS concentrations per year for each chemical. Plasma concentrations ecrease over time for perfluoroecanoate (PFDA), perfluorohexane sulfonate (PFHxS), perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), an perfluorounecanoate (PFUnDA) in both locations. Perfluorononanoate (PFNA) ecrease with time in Inian River Lagoon olphins. Perfluorooecanoate (PFDoDA) concentrations significantly increase over time among female Inian River Lagoon olphins. Regulation an phaseout of specific PFAS groups may have le to the ecreasing levels of those PFAS an increasing levels of other replacement PFAS.