Su Zi-Han, Wang Can, Zhou Xue, He Ming-Jing
College of Resources and Environment, Southwest University, Chongqing, 400716, China.
Planning and Natural Resources Bureau of Chongqing Wanzhou District, Chongqing, 404199, China.
Mar Environ Res. 2025 Jun;208:107135. doi: 10.1016/j.marenvres.2025.107135. Epub 2025 Apr 4.
Concern over the influences of constant addition of anthropogenic chemicals to the marine environment has attracted public attention. Organophosphate esters (OPEs) and phthalate esters (PAEs) were two emerging chemicals frequently added to a variety of products as flame retardants and plasticizers. However, limited information is available associated with their environmental behaviors in marine environment, and the tissue-specific bioaccumulation and biomagnification of OPEs and PAEs in fish remain subjects of ongoing debate. Hence, 12 OPE and 6 PA E analogues were analyzed in five marine fish species from the coast of Wenchang, Hainan province. The concentrations of ΣOPEs and ΣPAEs were in the range of 319-1790 ng/g lw and 400-1370 ng/g lw, respectively. Significantly negative correlations (p value < 0.05) were observed between the concentration of pollutants and their corresponding lipid contents of fish tissues. There were no obvious correlations between the logarithmic transformed concentrations of each OPE and PAE analogue with their corresponding Log K value in fish tissues, but OPE and PAE concentrations were likely to reach the highest when Log K values were around five. Significantly negative correlations (p value < 0.05) were found between logarithmic transformed concentrations of TCEP, TCP and BBP along with δN values in fish species, except for TDCIPP, TEHP and DBP which exhibited an increasing trend with the increasing of δN values. Furthermore, human exposure via fish intakes was assessed, and EDI ranged from 73.9 to 1910 ng/kg bw/day for ∑OPEs and 495-4550 ng/kg bw/day for ∑PAEs, respectively, which were both within the safe dose threshold, and the HI values of ΣOPEs and ΣPAEs were much lower than the boundary value of 1.00. This study contributes valuable insights into OPEs and PAEs present in marine organisms as well as robust evidence indicating that most OPE and PAE analogues undergo trophic dilution within marine fish.
对不断向海洋环境中添加人为化学物质的影响的担忧已引起公众关注。有机磷酸酯（OPEs）和邻苯二甲酸酯（PAEs）是两种新兴的化学物质，常作为阻燃剂和增塑剂添加到各种产品中。然而，关于它们在海洋环境中的环境行为的信息有限，并且OPEs和PAEs在鱼类中的组织特异性生物积累和生物放大作用仍是持续争论的话题。因此，对来自海南省文昌海岸的五种海洋鱼类中的12种OPE类似物和6种PAE类似物进行了分析。ΣOPEs和ΣPAEs的浓度分别在319 - 1790 ng/g lw和400 - 1370 ng/g lw范围内。在污染物浓度与其鱼类组织相应脂质含量之间观察到显著的负相关（p值<0.05）。在鱼类组织中，每种OPE和PAE类似物的对数转换浓度与其相应的Log K值之间没有明显的相关性，但当Log K值约为5时，OPE和PAE浓度可能达到最高。除了TDCIPP、TEHP和DBP随着δN值增加呈上升趋势外，在鱼类中，TCEP、TCP和BBP的对数转换浓度与δN值之间发现显著的负相关（p值<0.05）。此外，评估了通过鱼类摄入对人类的暴露情况，∑OPEs的每日估计摄入量（EDI）范围为73.9至1910 ng/kg bw/天，∑PAEs的范围为495至4550 ng/kg bw/天，两者均在安全剂量阈值内，并且∑OPEs和∑PAEs的危害商（HI）值远低于1.00的边界值。这项研究为海洋生物中存在的OPEs和PAEs提供了有价值的见解，以及有力的证据表明大多数OPE和PAE类似物在海洋鱼类中经历营养稀释。
