Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China; Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Marine Fishery Institute of Zhejiang Province, Zhoushan 316021, PR China.
College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, PR China.
Sci Total Environ. 2020 Jun 20;722:137997. doi: 10.1016/j.scitotenv.2020.137997. Epub 2020 Mar 17.
Phthalic acid esters (PAEs) are widely used as plasticizers in many industrial and household products. The widespread distribution of PAEs in marine environment has attracted great concerns, due to their adverse health effects on marine organisms. However, the data on the occurrence of PAEs in sediment from East China Sea is still scarce. In this study, 16 PAEs were analyzed in 67 sediment samples collected from the Hangzhou Bay, Taizhou Bay, and Wenzhou Bay. Eight PAEs were detected in collected sediment samples, and the total concentrations of detected PAEs (∑PAEs) were in the range of 654-2603 ng/g. The di(2-ethylhexyl) phthalate (DEHP) was the predominant PAE (mean 663 ng/g; accounted for mean 52% of ∑PAEs), followed by di-isobutyl phthalate (DiBP; 284 ng/g; 22%), di-n-butyl phthalate (DBP; 184 ng/g; 15%), and dimethyl phthalate (63 ng/g; 5.0%). The mean sediment concentration of ∑PAEs in the Hangzhou Bay (1623 ng/g) was higher than that in the Taizhou Bay (1282 ng/g) and Wenzhou Bay (1185 ng/g). Concentrations of diethyl phthalate, DiBP, and DBP were significantly and positively correlated with one another in sediment from Taizhou Bay and Wenzhou Bay. The estimated inventories of ∑PAEs in sediment from Hangzhou Bay, Taizhou Bay, and Wenzhou Bay were 82 tons, 28 tons, and 26 tons, respectively. Overall, this study provides the first data on the occurrence of PAEs in sediment from the East China Sea, which is necessary to conduct the PAE exposure risk assessment for the marine benthos.
邻苯二甲酸酯（PAEs）广泛用作许多工业和家用产品的增塑剂。由于邻苯二甲酸酯对海洋生物具有不良健康影响，因此它们在海洋环境中的广泛分布引起了极大关注。然而，有关东海沉积物中邻苯二甲酸酯的出现的数据仍然很少。在这项研究中，分析了取自杭州湾、台州湾和温州湾的 67 个沉积物样本中的 16 种邻苯二甲酸酯。在所采集的沉积物样本中检测到 8 种邻苯二甲酸酯，检测到的邻苯二甲酸酯总量（∑PAEs）的范围为 654-2603ng/g。邻苯二甲酸二（2-乙基己基）酯（DEHP）是主要的邻苯二甲酸酯（平均值为 663ng/g；占∑PAEs 的平均值 52%），其次是邻苯二甲酸二异丁酯（DiBP；284ng/g；22%），邻苯二甲酸二正丁酯（DBP；184ng/g；15%）和邻苯二甲酸二甲酯（63ng/g；5.0%）。杭州湾的∑PAEs 沉积物浓度（1623ng/g）高于台州湾（1282ng/g）和温州湾（1185ng/g）。台州湾和温州湾沉积物中邻苯二甲酸二乙酯、DiBP 和 DBP 的浓度彼此之间呈显著正相关。杭州湾、台州湾和温州湾沉积物中∑PAEs 的估计总量分别为 82 吨、28 吨和 26 吨。总体而言，本研究提供了东海沉积物中邻苯二甲酸酯出现情况的首批数据，这对于进行海洋底栖生物的邻苯二甲酸酯暴露风险评估是必要的。
