School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan 030024, China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes YICCAS, Yantai 264003, China.
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, Nanjing 210000, China; Research and Development Project of Jiangsu Environmental Engineering Technology Co., Ltd, Nanjing 210000, China.
J Hazard Mater. 2024 Jul 5;472:134529. doi: 10.1016/j.jhazmat.2024.134529. Epub 2024 May 7.
Halogenated flame retardants (HFRs) have attracted global attention owing to their adverse effects on ecosystems and humans. The Shandong Peninsula is the largest manufacturing base for HFRs in East Asia, yet its impacts on marine ecosystems are unclear. Seventeen HFRs were analyzed in organisms captured from the Xiaoqing River estuary, Bohai Sea (BS), Yellow Sea and Northern East China Sea to investigate the distribution and bioaccumulation of HFRs on a broad scale. The results showed a downward trend in ΣHFR concentrations from the estuary (37.7 ng/g lw on average) to Laizhou Bay (192 ng/g lw) and to coastal seas (3.13 ng/g lw). The concentrations of ΣHFRs were significantly higher in demersal fish (0.71-198 ng/g lw) and benthic invertebrates (0.81-3340 ng/g lw) than in pelagic fish (0.30-27.6 ng/g lw), reflecting a habitat dependence. The concentrations of higher-brominated homologs were greater in benthic invertebrates, whereas a greater level of lower-brominated PBDE congeners was observed in fish, suggesting different profiles between species. Furthermore, the analogue composition of HFRs in fish was similar to that in the dissolved phase of seawater, whereas the HFR pattern in benthic invertebrates was consistent with the profile in sediment. The concentrations of HFRs in organisms vary widely depending on emissions from anthropogenic activities, whereas bioaccumulation patterns are strongly influenced by species and habitat.
卤代阻燃剂（HFRs）因其对生态系统和人类的不良影响而引起了全球关注。山东半岛是东亚最大的 HFR 制造基地，但它对海洋生态系统的影响尚不清楚。本研究在小清河河口、渤海（BS）、黄海和北东海采集的生物体内分析了 17 种 HFRs，以调查 HFRs 在广泛范围内的分布和生物积累情况。结果表明，ΣHFR 浓度从河口（平均 37.7ng/g lw）到莱州湾（192ng/g lw）再到沿海水域（3.13ng/g lw）呈下降趋势。底栖鱼类（0.71-198ng/g lw）和底栖无脊椎动物（0.81-3340ng/g lw）中的ΣHFR 浓度明显高于洄游鱼类（0.30-27.6ng/g lw），反映出栖息地的依赖性。高溴同系物在底栖无脊椎动物中的浓度较高，而低溴 PBDE 同系物在鱼类中的浓度较高，这表明不同物种之间存在不同的特征。此外，鱼类中 HFR 的模拟组成与海水中溶解相的组成相似，而底栖无脊椎动物中的 HFR 模式与沉积物中的特征一致。生物体内 HFR 的浓度因人类活动的排放而差异很大，而生物积累模式受物种和栖息地的强烈影响。
