title: The bioconcentration factor of perfluorooctane sulfonate is significantly larger than that of perfluorooctanoate in wild turtles (Trachemys scripta elegans and Chinemys reevesii): an Ai river ecological study in Japan.
abstract: Turtles rank high in the river food chain, and are suitable for predicting the bioconcentrations of chemicals through the food chain. Trachemys scripta elegans (N=46) and Chinemys reevesii (N=51) were captured in a river in Japan, from September to October 2003 and April to June 2004. Surface water samples were collected simultaneously from the same sites at which the turtles were caught. Serum perfluorooctane sulfonate (PFOS) ranged from 2.4 to 486 microg/L, while water PFOS levels ranged from 2.9 to 37 ng/L. The geometric mean (GM) (geometric standard deviation, GSD) of the bioconcentration factor (BCF) of PFOS was 10,964 (2.5). In contrast, the perfluorooctanoate (PFOA) level in water ranged from 16.7-87,100 ng/L, and serum PFOA ranged from <0.2 to 870 microg/L. The GM (GSD) of the BCF of PFOA was 3.2 (7.9). Furthermore, the BCF of PFOA decreased as the PFOA level in the surface water increased. PFOS could be preferentially bioconcentrated in biota, and PFOA, slightly bioconcentrated.
authors.affiliation: Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Yoshida Konoe, Sakyo, Kyoto 606-8501, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Morikawa
authors.forename: Naoya
authors.initials: N
authors.lastname: Kamei
authors.forename: Kouji
authors.initials: K
authors.lastname: Harada
authors.forename: Kayoko
authors.initials: K
authors.lastname: Inoue
authors.forename: Takeo
authors.initials: T
authors.lastname: Yoshinaga
authors.forename: Norimitsu
authors.initials: N
authors.lastname: Saito
authors.forename: Akio
authors.initials: A
authors.lastname: Koizumi
mesh_terms: D017738:Alkanesulfonic Acids / Q000097:blood*; D000704:Analysis of Variance; D000818:Animals; D002210:Caprylates / Q000097:blood*; D017753:Ecosystem; D004785:Environmental Pollutants / Q000737:chemistry; D005466:Fluorocarbons / Q000097:blood*; D020387:Food Chain; D005843:Geography; D007564:Japan; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry*; D014426:Turtles / Q000097:blood*
chemical_list: D017738:Alkanesulfonic Acids; D002210:Caprylates; D004785:Environmental Pollutants; D005466:Fluorocarbons; C023036:perfluorooctanoic acid; C076994:perfluorooctane sulfonic acid