Institute for Coastal Research, Helmholtz-Zentrum Geesthacht, Max-Planck Strasse 1, 21502 Geesthacht, Germany.
Environ Sci Technol. 2011 Oct 1;45(19):8090-7. doi: 10.1021/es103473v. Epub 2011 Jan 18.
Temporal trends of polyfluoroalkyl compounds (PFCs) were examined in tawny owl (Strix aluco) eggs collected in Central Norway over a period of 24 years (1986-2009). Concentrations of 12 PFCs, including C(6)-C(8), C(10) perfluoroalkyl sulfonates (PFSAs), perfluorooctane sulfonamide (PFOSA), and C(8)-C(14) perfluoroalkyl carboxylates (PFCAs), were measured, whereas saturated and unsaturated fluorotelomer carboxylates and shorter chain PFSAs and PFCAs were not detected. Perfluorooctane sulfonate (PFOS) was the predominant compound (geometric mean 10.1 ng/g wet weight (ww)), followed by perfluorotridecanoate (PFTriDA) (0.36 ng/g ww) and perfluoroundecanoate (PFUnDA) (0.19 ng/g ww). Significant decreasing concentrations were found for PFOS with an annual decrease of 1.6% (1986-2009), while, conversely, the C(10)-C(13) PFCA concentrations increase significantly with an annual increase of 4.2-12% (1986-2009). Consequently, the contribution of PFOS to the ∑PFCs decreased, whereas the contribution of the ∑PFCAs increased over the time. Toxicological implications for tawny owls are limited, but the maximal PFOS concentration found in this stu0dy is about 20 times lower than the predicted avian no effect concentration (PNEC) which suggest adverse effects caused by PFOS are unlikely. However, tawny owls are exposed to a mixture of various PFCs, and PFCA concentrations still increase.
在过去的 24 年（1986-2009 年）中，我们对挪威中部的茶隼（Strix aluco）卵中的多氟烷基化合物（PFCs）进行了时间趋势研究。我们测量了 12 种 PFCs，包括 C（6）-C（8）、C（10）全氟烷基磺酸盐（PFSAs）、全氟辛烷磺酸（PFOSA）和 C（8）-C（14）全氟烷基羧酸（PFCAs），但未检测到饱和和不饱和氟调聚物羧酸以及较短链 PFSAs 和 PFCAs。全氟辛烷磺酸（PFOS）是主要化合物（几何平均值为 10.1ng/g 湿重（ww）），其次是全氟十三烷酸（PFTriDA）（0.36ng/g ww）和全氟壬酸（PFUnDA）（0.19ng/g ww）。PFOS 的浓度呈显著下降趋势，年下降率为 1.6%（1986-2009 年），而相反，C（10）-C（13）PFCAs 的浓度呈显著上升趋势，年增长率为 4.2-12%（1986-2009 年）。因此，PFOS 对∑PFCs 的贡献减少，而∑PFCAs 的贡献随时间增加。茶隼的毒理学影响有限，但本研究中发现的 PFOS 最大浓度比预测的鸟类无效应浓度（PNEC）低约 20 倍，这表明 PFOS 造成的不良影响不太可能。然而，茶隼暴露在各种 PFCs 的混合物中，且 PFCAs 的浓度仍在增加。
