Occurrence and Trophic Magnification of Organophosphate Esters in an Antarctic Ecosystem: Insights into the Shift from Legacy to Emerging Pollutants
Occurrence and Trophic Magnification of Organophosphate Esters in an Antarctic Ecosystem: Insights into the Shift from Legacy to Emerging Pollutants
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南极生态系统中有机磷酸酯的出现和营养放大：洞察从遗留污染物到新兴污染物的转变
DOI：
10.1016/j.jhazmat.2020.122742
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发表时间：
2020-09-05
影响因子：
13.6
通讯作者：
Jiang, Guibin
中科院分区：
文献类型：
--
作者：
Fu, Jie;Fu, Kehan;Jiang, Guibin
有机磷酸酯（OPEs）在南极生态系统中的存在和营养动力学至今知之甚少。本研究首次报道了南极菲尔德斯半岛和阿德利岛生态系统中OPEs的普遍存在。基于干重，OPE浓度按以下顺序降低：企鹅羽毛（94.4 ng/g）>鱼类（8.81 ng/g）>海角海燕羽毛（8.48 ng/g）>原腹足类（Agas，6.46 ng/g）>新腹足类（Ngas，4.89 ng/g）>沉积物（3.66 ng/g）>藻类（1.60 ng/g）。磷酸三（2-氯乙基）酯（TCEP）和磷酸三（2-氯异丙基）酯（TCIPP）占所有样品中检出OPEs的61.2%。TCEP、TCIPP和磷酸三苯酯（TPhP）具有明显的营养放大行为，其营养放大因子分别为5.20、2.92和2.74。与以往研究的持久性有机污染物（POPs）测量值相比，OPEs水平远高于传统持久性有机污染物（POPs），表明南极生态系统中的污染物负荷已从传统持久性有机污染物转移到新兴污染物。考虑到OPEs的生物放大行为、极地特有物种对人为污染物的敏感性以及全球变暖导致冰川融化对OPEs的再活化作用等因素，OPEs在南极环境中的生物累积和毒理学风险值得关注。
Little is known about the occurrence and trophodynamics of organophosphate esters (OPEs) in the Antarctic ecosystem to date. The present study reported the ubiquitous occurrence of OPEs in an ecosystem from the Fildes Peninsula and Ardley Island, Antarctica for the first time. The OPE concentrations decreased in the following sequence based on dry weight: penguin feathers (94.4 ng/g)> fish (8.81 ng/g)> Cape petrel feathers (8.48 ng/g)> Archeogastropoda (Agas, 6.46 ng/g)> Neogastropoda (Ngas, 4.89 ng/g)> sediment (3.66 ng/g)> algae (1.60 ng/g). Tris (2-chloroethyl) phosphate (TCEP) and tris (2-chloroisopropyl) phosphate (TCIPP) accounted for 61.2% of detected OPEs in all samples. Significant trophic magnification behavior of TCEP, TCIPP and triphenyl phosphate (TPhP) was discovered, with trophic magnification factors of 5.20, 2.92 and 2.74, respectively. Compared to measurements of POPs from previous studies, OPEs level was much higher than legacy persistent organic pollutants (POPs), which indicated the pollutant burden in the Antarctic ecosystems shifted from legacy POPs to emerging pollutants. Considering the biomagnification behavior of OPEs, the sensitivity of endemic species in polar region to anthropogenic pollutants and the remobilization of OPEs from melting glaciers due to global warming, more attention should be paid to the bioaccumulation and toxicological risks of OPEs in Antarctic environments.