U.S. Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin, USA.
Environ Toxicol Chem. 2013 Apr;32(5):1077-83. doi: 10.1002/etc.2146. Epub 2013 Mar 19.
A great blue heron (Ardea herodias) colony on Pig's Eye Island on the Mississippi River near St. Paul, Minnesota, USA, is located near several potential perfluorinated compound (PFC) sources. The PFC concentrations in great blue heron eggs reported from a 1993 collection from the Pig's Eye colony were among the highest measured in bird eggs worldwide. The objective of this investigation was to determine whether PFC concentrations in great blue heron eggs at the Pig's Eye colony have changed since 1993. Total PFC concentrations in great blue heron eggs collected at the Pig's Eye colony in 2010 and 2011 (geometric mean=340 and 492 ng/g wet wt) were 60% lower than the 1993 collection (1,015 ng/g wet wt). Among PFCs, perfluoroalkyl sulfonate concentrations were lower and perfluoroalkyl carboxylate concentrations were higher in the 2010 and 2011 collections. Two of 20 (10%) of the eggs analyzed from Pig's Eye in 2010 and 2011 were >1,000 ng PFCs/g wet weight and the maximum PFC value (2,506 ng PFCs/g wet wt) measured in 2010 and 2011 was among the highest PFC concentration reported in bird eggs. These high concentrations are at levels associated with physiological and neurological effects in birds.
美国明尼苏达州圣保罗附近密西西比河上的皮格眼岛（Pig's Eye Island）是大蓝鹭（Ardea herodias）的栖息地，附近有几个可能的全氟化合物（PFC）来源。1993 年从皮格眼岛收集的大蓝鹭蛋中报告的 PFC 浓度是全球鸟类蛋中最高的。本研究的目的是确定皮格眼岛大蓝鹭蛋中的 PFC 浓度自 1993 年以来是否发生了变化。2010 年和 2011 年在皮格眼岛收集的大蓝鹭蛋中的总 PFC 浓度（几何平均值分别为 340 和 492ng/g 湿重）比 1993 年的采集量（1,015ng/g 湿重）低 60%。在 PFC 中，2010 年和 2011 年收集的全氟烷基磺酸盐浓度较低，全氟烷基羧酸浓度较高。2010 年和 2011 年从皮格眼岛分析的 20 个蛋中有 2 个（10%）>1,000ng PFCs/g 湿重，2010 年和 2011 年测量的最高 PFC 值（2,506ng PFCs/g 湿重）是鸟类蛋中报告的最高 PFC 浓度之一。这些高浓度与鸟类的生理和神经效应有关。
