Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, PR China; 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 Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou 310014, PR China.
Sci Total Environ. 2022 Feb 10;807(Pt 1):150643. doi: 10.1016/j.scitotenv.2021.150643. Epub 2021 Sep 29.
As well-known emergent environmental contaminants, polyhalogenated carbazoles (PHCZs) have recently received increasing attention. In this study, we investigated the concentrations of carbazole (CZ) and PHCZs in 70 marine organisms from the East China Sea (ECS). CZ and 9-11 PHCZs were detected in organisms from the ECS, with concentrations in the range of 0.75-33 ng/g lipid weight, lw and 4.3-113 ng/g lw, respectively. Among the PHCZs, there were 3-4 major components in zooplankton, fish, shrimp, crabs, snails and shellfish, and the sum of these major components accounted for 59% to 67% of ∑PHCZs. The bioaccumulation potentials of 1,3,6,8-tetrachlorocarbazole (1368-CCZ) and 3-chlorocarbazole (3-CCZ) from water were observed. The logarithmic bioaccumulation factor (logBAF) values of the CZ and PHCZs increased significantly with increasing logK values (R = 0.449-0.784, p < 0.01). The trophic magnification factor (TMF) values of the CZ, 9 PHCZs and ∑PHCZs were calculated to be 3.32, 1.87-4.06 and 2.36, respectively, indicating the potential biomagnification of the CZ and PHCZs in the zooplankton-shrimp-fish food web. The toxic equivalents (TEQs) of PHCZs in organisms from the ECS were in the range of 0.78-36 pg TEQ/g lw. Overall, for the first time, this study systematically examined the occurrence, bioaccumulation and potential risk of PHCZs in the marine food web of the East China Sea.
作为新兴的环境污染物，多卤代咔唑（PHCZs）近年来受到了越来越多的关注。本研究调查了来自东海（ECS）的 70 种海洋生物中咔唑（CZ）和 PHCZs 的浓度。在 ECS 的生物中检测到 CZ 和 9-11 种 PHCZs，浓度范围分别为 0.75-33ng/g 脂重（lw）和 4.3-113ng/g lw。在 PHCZs 中，浮游动物、鱼类、虾类、蟹类、贝类和贝类中有 3-4 种主要成分，这些主要成分的总和占∑PHCZs 的 59%-67%。观察到 1,3,6,8-四氯咔唑（1368-CCZ）和 3-氯咔唑（3-CCZ）从水中的生物蓄积潜力。CZ 和 PHCZs 的对数生物积累因子（logBAF）值随 logK 值的增加而显著增加（R=0.449-0.784，p<0.01）。CZ、9 种 PHCZs 和∑PHCZs 的营养放大因子（TMF）值分别计算为 3.32、1.87-4.06 和 2.36，表明 CZ 和 PHCZs 在浮游动物-虾-鱼食物网中有潜在的生物放大作用。ECS 生物中 PHCZs 的毒性当量（TEQs）范围为 0.78-36pg TEQ/g lw。总的来说，本研究首次系统地研究了东海海洋食物网中 PHCZs 的存在、生物蓄积和潜在风险。
