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  • Perfluoroalkyl acids in subarctic wild male mink (Neovison vison) in relation to age, season and geographical area.

Perfluoroalkyl acids in subarctic wild male mink (Neovison vison) in relation to age, season and geographical area.

Environment international (2013-08-10)
Sara Persson, Anna Rotander, Anna Kärrman, Bert van Bavel, Ulf Magnusson
摘要

This study investigates the influence of biological and environmental factors on the concentrations of perfluoroalkyl acids (PFAAs) in a top predator; the American mink. Perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS) and perfluoroalkyl carboxylates (PFCAs) with C8-C13 perfluorinated carbon chains were analyzed in livers from wild male mink liver (n=101) from four areas in Sweden representing two inland environments (rural and highly anthropogenic, respectively) and two different coastal environments. Mean PFOS concentrations were 1250ng/g wet weight and some mink from the urban inland area had among the highest PFOS concentrations ever recorded in mink (up to 21 800ng/g wet weight). PFBS was detected in 89% of the samples, but in low concentrations (mean 0.6ng/g ww). There were significant differences in PFAA concentrations between the geographical areas (p<0.001-0.01). Age, body condition and body weight did not influence the concentrations significantly, but there was a seasonal influence on the concentrations of perfluorodecanoic acid (PFDA) and perfluoroundecanoic acid (PFUnDA) (p<0.01 and p<0.05, respectively), with lower concentrations in autumn samples than in samples taken in the winter and spring. It is thus recommended to take possible seasonal differences into account when using mink exposure data. The overall results suggest that the mink is a suitable sentinel species for assessing and monitoring environmental levels of PFAAs.

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Sigma-Aldrich
十七氟辛烷磺酸 溶液, ~40% in H2O (T)
Sigma-Aldrich
十四氟己烷, 99%
Supelco
十七氟辛烷磺酸 溶液, 100 μg/mL in methanol, analytical standard
Sigma-Aldrich
十九氟癸酸, 98%
Sigma-Aldrich
十四氟己烷, A mixture of perfluorinated hexanes, 95%