Bioaccumulation of perfluoroalkyl compounds in midge (Chironomus riparius) larvae exposed to sediment

• Published in: Environmental pollution (1987) Vol. 189; pp. 27 - 34
• Main Authors: BERTIN, Delphine, FERRARI, Benoît J. D, LABADIE, Pierre, SAPIN, Alexandre, GARRIC, Jeanne, BUDZINSKI, Hélène, HOUDE, Magali, BABUT, Marc
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier 01.06.2014
• Subjects: Animal, plant and microbial ecology; Animals; Applied ecology; Bioaccumulation; Biological and medical sciences; Carboxylates; Chironomidae - metabolism; Chironomus riparius; Ecotoxicology, biological effects of pollution; Effects of pollution and side effects of pesticides on protozoa and invertebrates; Environmental Monitoring; Environmental Sciences; Exposure; Fluorocarbons - metabolism; France; Freshwater; Fundamental and applied biological sciences. Psychology; Geologic Sediments - chemistry; Larva - metabolism; Larvae; Perfluoroalkyls; Precursors; Sediments; Sulfonates; Water Pollutants, Chemical - metabolism; France; Europe; MED, France, Provence-Cote d'Azur, Rhone R; ANE, France; France, Provence-Cote d'Azur, Rhone R; Chironomidae; Perfluoroalkyl compounds; Sediment; Chironomus riparius; Pollutant behavior; Insecta; Rivers; Sediments; Freshwater environment; Larva; Bioaccumulation; Arthropoda; Water pollution; Fluorine Organic compounds; Invertebrata; Biological accumulation; Diptera; BIOACCUMULATION; SEDIMENT; CHIRONOMUS RIPARIUS; PERFLUOROALKYL COMPOUNDS
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2014.02.018

Midge larvae (Chironomus riparius) were exposed to sediments from a deposition sampled at a site along the Rhône River (France) downstream of an industrial site releasing various perfluorinated chemicals. This sediment is characterized by high concentrations of perfluoroundecanoic acid (PFUnA) and perfluorotridecanoic acid (PFTrDA) and a low perfluorooctane sulfonate (PFOS) concentration. Concentrations of 23 perfluoroalkyl compounds, including C4-C14 carboxylate acids, C4-C10 sulfonates, and seven precursors, were analyzed in overlying and pore water, sediment, and larvae. Midge larvae accumulated carboxylate acids (C11-C14), PFOS, and two precursors (perfluorooctane sulfonamide: FOSA and 6:2 fluorotelomer sulfonic acid, 6:2 FTSA). These substances accumulated mainly during the fourth instar larvae exponential growth phase. Accumulation of 6:2 FTSA, PFUnA, and PFOS occured via trophic and tegumentary routes. Other compounds mainly accumulated from food. Kinetics followed a partition model, from which uptake and elimination constants were derived.