State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China.
School of Marine Sciences, Guangxi University, Nanning 530004, China.
J Hazard Mater. 2021 May 5;409:124937. doi: 10.1016/j.jhazmat.2020.124937. Epub 2020 Dec 23.
Phthalates (PAEs) and polybrominated diphenyl ethers (PBDEs) are widely used as additives in various plastic products. Because of their ubiquity and potential hazards to the environment, they have attracted widespread attention. This research supports the addition critical data of the concentration and distribution of PAEs and PBDEs in the plastic fragments and wetland sediments in Yangtze Estuary. The concentrations of ΣPAEs and ΣPBDEs in the plastic samples in Yangtze Estuary wetlands were 26.8-4241.8 μg/g and n.d. (no detectable) to 250.1 μg/g, respectively. The sixteen PAEs and eight PBDEs varied from 35.9 to 36225.2 ng/g and 3.9-253.0 ng/g in sediment samples. The dominant types of these chemicals in plastic and sediment samples were diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), dioctyl phthalate (DEHP) and BDE-209. According to correlation analysis and principal component analysis, the major sources of additives in sediment were associated with the leak from plastic fragment and microplastic. Based on the equilibrium partitioning theory and Sediment Quality Guidelines (SeQGs), the ecological risk of PAEs (high risk) and PBDEs (moderate risk) were evaluated. Overall, the investigated area has been moderately polluted by additives and microplastics; therefore, it is necessary to strengthen the control of environmental input of plastic waste.
酞酸酯（PAEs）和多溴联苯醚（PBDEs）广泛用作各种塑料制品的添加剂。由于它们的普遍性和对环境的潜在危害，它们引起了广泛的关注。本研究支持了长江口塑料碎片和湿地沉积物中 PAEs 和 PBDEs 浓度和分布的附加关键数据。长江口湿地塑料样本中ΣPAEs 和 ΣPBDEs 的浓度分别为 26.8-4241.8μg/g 和 n.d.（未检出）至 250.1μg/g。在沉积物样本中，这 16 种 PAEs 和 8 种 PBDEs 的浓度范围分别为 35.9-36225.2ng/g 和 3.9-253.0ng/g。这些化学品在塑料和沉积物样本中的主要类型为邻苯二甲酸二异丁酯（DIBP）、邻苯二甲酸二丁酯（DBP）、邻苯二甲酸二辛酯（DEHP）和 BDE-209。根据相关分析和主成分分析，沉积物中添加剂的主要来源与塑料碎片和微塑料的泄漏有关。根据平衡分配理论和沉积物质量指南（SeQGs），评估了 PAEs（高风险）和 PBDEs（中等风险）的生态风险。总体而言，调查区域已受到添加剂和微塑料的中度污染；因此，有必要加强对塑料废物环境输入的控制。
