Biomagnification of perfluoroalkyl compounds in the bottlenose dolphin (Tursiops truncatus) food web
Biomagnification of perfluoroalkyl compounds in the bottlenose dolphin (Tursiops truncatus) food web
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DOI：
10.1021/es060233b
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发表时间：
2006-07-01
影响因子：
11.4
通讯作者：
Muir, Derek C. G.
中科院分区：
文献类型：
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作者：
Houde, Magali;Bujas, Trevor A. D.;Muir, Derek C. G.
研究了宽吻海豚 (Tursiops truncatus) 食物网中一系列全氟烷基化合物 (PFC) 的环境分布和生物放大作用，包括全氟辛烷磺酸 (PFOS) 和 C-8 至 C-14 全氟羧酸盐 (PFCA)。表层海水和沉积物样本以及浮游动物、鱼类和宽吻海豚组织样本是在美国两个地点采集的：佛罗里达州萨拉索塔湾和南卡罗来纳州查尔斯顿港。还从查尔斯顿地区收集了废水处理厂 (WWTP) 废水 (n = 4)。固相萃取用于海水和污水样品，离子对方法用于沉积物和生物样品。在海水（范围 < 1-12 ng/L）、沉积物（范围 < 0.01-0.4 ng/g 湿重 (ww)）和浮游动物（范围 0.06-0.3 ng/g ww）中检测到了 PFC。在污水处理厂废水、全鱼、海豚血浆和组织样本中检测到最高的 PFC 浓度，其中 PFOS、C-8 和 C-10-PFCA 在大多数基质中占主导地位。污染情况因地点而异，表明 PFC 排放源不同。萨拉索塔湾的生物放大因子 (BMF) 范围为 < 1 至 156，查尔斯顿的生物放大因子 (BMF) 范围为 < 1 至 30。 PFOS 和 C-8-C-11 PFCA 的营养放大因子 (TMF) 表明该海洋食物网中存在生物放大作用。结果表明，使用血浆和肝脏 PFC 浓度作为顶级海洋捕食者全身负荷的替代值会高估 BMF 和 TMF。
The environmental distribution and the biomagnification of a suite of perfluoroalkyl compounds (PFCs), including perfluorooctane sulfonate (PFOS) and C-8 to C-14 perfluorinated carboxylates (PFCAs), was investigated in the food web of the bottlenose dolphin (Tursiops truncatus). Surficial seawater and sediment samples, as well as zooplankton, fish, and bottlenose dolphin tissue samples, were collected at two U. S. locations: Sarasota Bay, FL and Charleston Harbor, SC. Wastewater treatment plant (WWTP) effluents were also collected from the Charleston area (n = 4). A solid-phase extraction was used for seawater and effluent samples and an ion-pairing method was used for sediment and biotic samples. PFCs were detected in seawater (range < 1-12 ng/L), sediment (range < 0.01-0.4 ng/g wet weight (ww)), and zooplankton (range 0.06-0.3 ng/g ww). The highest PFC concentrations were detected in WWTP effluents, whole fish, and dolphin plasma and tissue samples in which PFOS, C-8 and C-10-PFCAs predominated in most matrices. Contamination profiles varied with location suggesting different sources of PFC emissions. Biomagnification factors (BMFs) ranged from < 1 to 156 at Sarasota Bay and < 1 to 30 at Charleston. Trophic magnification factors (TMFs) for PFOS and C-8-C-11 PFCAs indicated biomagnification in this marine food web. The results indicate that using plasma and liver PFC concentrations as surrogate to whole body burden in a top marine predator overestimates the BMFs and TMFs.