State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Laboratory of Riverine Ecological Conservation and Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Environ Pollut. 2014 Jan;184:254-61. doi: 10.1016/j.envpol.2013.09.011. Epub 2013 Sep 25.
In this study, the bioaccumulation of perfluorinated compounds from a food web in Taihu Lake in China was investigated. The organisms included egret bird species, carnivorous fish, omnivorous fish, herbivorous fish, zooplankton, phytoplankton, zoobenthos and white shrimp. Isotope analysis by δ(13)C and δ(15)N indicated that the carnivorous fish and egret were the top predators in the studied web, occupying trophic levels intermediate between 3.66 and 4.61, while plankton was at the lowest trophic level. Perfluorinated carboxylates (PFCAs) with 9-12 carbons were significantly biomagnified, with trophic magnification factors (TMFs) ranging from 2.1 to 3.7. The TMF of perfluorooctane sulfonate (PFOS) (2.9) was generally comparable to or lower than those of the PFCAs in the same food web. All hazard ratio (HR) values reported for PFOS and perfluorooctanoate (PFOA) were less than unity, suggesting that the detected levels would not cause any immediate health effects to the people in Taihu Lake region through the consumption of shrimps and fish.
本研究调查了中国太湖食物网中全氟化合物的生物累积情况。研究的生物包括白鹭鸟类、肉食性鱼类、杂食性鱼类、草食性鱼类、浮游动物、浮游植物、底栖动物和白虾。通过 δ(13)C 和 δ(15)N 的同位素分析表明，肉食性鱼类和白鹭是研究网络中的顶级掠食者，占据 3.66 到 4.61 之间的中间营养级，而浮游生物处于最低营养级。具有 9-12 个碳原子的全氟羧酸（PFCAs）明显生物放大，营养放大因子（TMF）范围为 2.1 至 3.7。全氟辛烷磺酸（PFOS）（2.9）的 TMF 通常与同一食物网中 PFCAs 的 TMF 相当或低于其 TMF。报告的全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）的所有危害比（HR）值均小于 1，表明从虾和鱼的消费中，检测到的水平不会对太湖地区的人们造成任何直接的健康影响。
