College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu 610207, China.
Dalian Key Laboratory of Conservation Biology for Endangered Marine Mammals, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China.
J Hazard Mater. 2024 Jan 5;461:132694. doi: 10.1016/j.jhazmat.2023.132694. Epub 2023 Oct 3.
Tissue (muscle, liver, kidney, lung, and heart) distribution and trophic transfer of organophosphate (OP) triesters and diesters in stranded 10 minke whales, 20 spotted seals and 27 East Asian finless porpoises from the Liaodong Bay and the Northern Yellow Sea were evaluated. The OP triesters and diesters were widely found in the tissues of the three marine mammals and their preys, with mean concentrations ranging from below the limits of detection (LOD) to 4342 μg/kg dry weight (dw) and from below the LOD to 1460 μg/kg dw, respectively. Tissue-specific distribution of the OP triesters or diesters were found in the investigated marine mammals with chemical-specific and species-specific. Log Kow negatively affect the accumulation of OP diesters in the marine mammals (p < 0.05), which related to their accumulation pathway in the tissues. The biological traits of the three marine mammals, body length, gender and age could affect the distribution of several OP triesters or diesters. Yet more concern is that significantly biological magnification was found for bis(2-chloroethyl) phosphate (BCEP) with trophic magnification factor (TMF) of 5.36 and for tris(2-ethylhexyl) phosphate (TEHP)(TMF:2.88) along with the finless porpoise food web. These results considerably contribute to expanding understanding of OP triesters or diesters pollution on the organisms in marine ecosystem.
对辽东湾和北黄海搁浅的 10 头小须鲸、20 头斑海豹和 27 头东亚江豚的组织（肌肉、肝脏、肾脏、肺和心脏）分布和有机磷（OP）三酯和二酯的营养转移进行了评估。在这三种海洋哺乳动物及其猎物的组织中广泛发现了 OP 三酯和二酯，其浓度范围从检测限以下到 4342μg/kg 干重（dw）不等，从检测限以下到 1460μg/kg dw 不等。在所研究的海洋哺乳动物中，发现了 OP 三酯或二酯的组织特异性分布，具有化学特异性和物种特异性。Log Kow 对 OP 二酯在海洋哺乳动物中的积累有负面影响（p<0.05），这与它们在组织中的积累途径有关。这三种海洋哺乳动物的生物学特征，如体长、性别和年龄，可能会影响几种 OP 三酯或二酯的分布。更值得关注的是，发现了双（2-氯乙基）磷酸酯（BCEP）和三（2-乙基己基）磷酸酯（TEHP）（TMF：5.36 和 2.88）沿江豚食物网存在显著的生物放大效应。这些结果极大地有助于扩大对海洋生态系统中生物体有机磷三酯或二酯污染的认识。
