水沉积物中新型溴化阻燃剂十溴二苯乙烷（DBDPE）：污染特征、暴露途径、生态毒理学效应和健康风险综述,Environmental Pollution

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水沉积物中新型溴化阻燃剂十溴二苯乙烷（DBDPE）：污染特征、暴露途径、生态毒理学效应和健康风险综述
Environmental Pollution ( IF 7.6 ) Pub Date : 2023-06-27 , DOI: 10.1016/j.envpol.2023.122121
Rui Wang ₁ , Hongguang Cheng ₁ , Yiwei Gong ₁ , Tao Huang ₁

Affiliation

作为多溴二苯醚（PBDE）的替代品，十溴二苯乙烷（DBDPE）已成为最重要的新型溴化阻燃剂（NBFR）之一。然而，人们对这种新兴污染物是否可能具有与多溴二苯醚类似的环境后果知之甚少。沉积物是 DBDPE 在水相中的主要汇。自首次在沉积物中发现至今，全球浓度数据已得到整理，并得出以下结论。 (1) 沉积物中的 DBDPE 浓度迅速增加，源头排放区域的污染风险往往更高。与其他国家相比，我国DBDPE污染更为严重，尤其是广东省，这与其作为电子垃圾拆解区密切相关。 (2) 表层沉积物中 DBDPE 的含量已超过传统溴化阻燃剂 (BFR)，沉积物岩心中记录的数据也证实 DBDPE 正在取代十溴二苯醚 (BDE-209)，成为地球上最主要的 NBFR 之一。环境。（3）DBDPE的暴露途径包括膳食摄入、空气或室内粉尘摄入、皮肤吸收和内源性暴露。对于沉积物，需要考虑饮食暴露和内源暴露途径。沉积物DBDPE可以通过受污染的海鲜和食物链等生物富集进入人体。 (4) DBDPE对生物体具有神经毒性、甲状腺毒性、生殖发育毒性、肝毒性和氧化应激作用。长期接触 DBDPE 可能会增加甲状腺功能亢进的风险并抑制正常细胞的活性。本综述重点研究了全球水体沉积物中DBDPE的分布特征和暴露风险，为环境管理和相关法律政策制定提供有力参考。下一步的重点是 DBDPE 的连续源监测、过程控制和沉积物清理。针对含有 DBDPE 的废弃微塑料 (MP) 和电子废物开发可持续水管理方案是当务之急。

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New brominated flame retardant decabromodiphenyl ethane (DBDPE) in water sediments: A review of contamination characteristics, exposure pathways, ecotoxicological effects and health risks

As an alternative to polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE) has become one of the most important new brominated flame retardants (NBFRs). However, little is known about whether this emerging contaminant may has an environmental fate similar to PBDEs. Sediments are the main sink for DBDPE in the aqueous phase. Worldwide concentration data, since it was first found in sediments to date, have been collated, and the following conclusions have been drawn. (1) DBDPE concentrations in sediments have increased rapidly, often with a higher risk of contamination in source discharge areas. Compared with other countries, DBDPE contamination in China is more severe, especially in Guangdong Province, which is closely related to its being an e-waste dismantling area. (2) The amount of DBDPE in surface sediments has exceeded that of legacy brominated flame retardants (BFRs), and data recorded in sediment cores also corroborate that DBDPE is replacing decabromodiphenyl ether (BDE-209) as one of the most dominant NBFRs in the environment. (3) The exposure pathways of DBDPE include dietary intake, air or indoor dust intake, cutaneous absorption and endogenous exposure. For sediments, dietary exposure and endogenous exposure pathways need to be considered. Sediment DBDPE can enter the human body through bioenrichment such as contaminated seafood and the food chain. (4) DBDPE can exhibit neurotoxicity, thyrotoxicity, reproductive and developmental toxicity, hepatotoxicity and oxidative stress in organisms. Long-term DBDPE exposure may increase hyperthyroidism risk and inhibit normal cells activity. This review focuses on the distribution characteristics and exposure risks of DBDPE in global water sediments, providing a strong reference for environmental management and related legal policy formulation. The next steps are to focus on continuous source monitoring, process control and sediment clean-up of DBDPE. The development of sustainable water management options for waste microplastics (MPs) and e-waste spiked with DBDPE is a priority.

更新日期：2023-06-27

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