State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, PR China.
J Hazard Mater. 2022 Aug 15;436:129219. doi: 10.1016/j.jhazmat.2022.129219. Epub 2022 May 23.
Most investigations on organophosphate esters (OPEs) are conducted predominantly in a separate biological or abiotic medium, and few joint analyses have been performed in the mariculture ecosystem based on yearly sampling. Herein, we investigated the occurrence, load estimation, phase distribution, source diagnostics, and risks of 20 OPEs in seawater, sediment, and aquaculture organisms from a typical mariculture area in China. The total of these OPEs (∑) ranged within 3.97-1068 ng/L, 0.39-65.5 ng/g (dw), and 4.09-16.3 ng/g (ww) in seawater, sediment and organisms, respectively. Chlorinated OPEs were the predominant congeners detected in seawater, whereas alkyl-OPEs were the leading contributors in sediment and biological samples. Seasonal variations of ∑ in seawater were more distinct than those in sedimentary environments. Load estimation indicated that approximately 70% of the OPEs in the study area existed in the water bodies. Source identification performed using the U.S. EPA positive matrix factorization indicated that polyurethane foam/plastics and hydraulic oil made the greatest contributions in seawater, whereas chemical production was the predominant source in sediment. Indices of ecological and health risks of OPEs were lower than their risk threshold, indicating that the OPEs detected in this study posed a low risk to the aquatic environment and human health.
大多数关于有机磷酸酯（OPEs）的研究主要在单独的生物或非生物介质中进行，而基于每年采样的海洋养殖生态系统中很少进行联合分析。在此，我们调查了中国典型海洋养殖区海水中、沉积物中和养殖生物中 20 种 OPEs 的存在情况、负荷估算、相分布、源解析和风险。这些 OPEs 的总量（∑）分别在海水中为 3.97-1068ng/L、沉积物中为 0.39-65.5ng/g（干重）、生物中为 4.09-16.3ng/g（湿重）。海水中检测到的主要同系物为氯化 OPEs，而沉积物和生物样本中的主要贡献者为烷基-OPEs。海水中∑的季节性变化比沉积环境中的变化更为明显。负荷估算表明，研究区域中约 70%的 OPEs 存在于水体中。使用美国环保署正矩阵因子分析进行的源识别表明，聚氨酯泡沫/塑料和液压油对海水的贡献最大，而化学生产是沉积物的主要来源。OPEs 的生态和健康风险指数低于其风险阈值，表明本研究中检测到的 OPEs 对水生环境和人类健康的风险较低。
