PBDD/F、溴化 PAH 和 PBDE 同系物在二次铜冶炼过程中形成特征的变化,Journal of Hazardous Materials

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PBDD/F、溴化 PAH 和 PBDE 同系物在二次铜冶炼过程中形成特征的变化
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2022-07-16 , DOI: 10.1016/j.jhazmat.2022.129602
Bingcheng Lin ₁ , Guorui Liu ₂ , Guanglong Wu ₃ , Changzhi Chen ₁ , Yong Liang ₄ , Pu Wang ₄ , Jianping Guo ₅ , Lili Yang ₆ , Rong Jin ₁ , Yuxiang Sun ₁ , Minghui Zheng ₇

Affiliation

School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
International Environmental Cooperation Center, Ministry of Ecology and Environment, 100035 Beijing, China.
Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University, Wuhan 430056, China.
State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing 100041, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University, Wuhan 430056, China.

对工业规模二次铜冶炼厂多个阶段的多溴二苯并二恶英和二苯并呋喃 (PBDD/Fs)、溴化多环芳烃 (Br-PAHs) 和多溴二苯醚 (PBDEs)的 58 种同源物进行同时测定目的是了解它们的变化和控制。除了作为溴化阻燃剂的 PBDEs 的历史生产之外，本研究证实 PBDEs 可能会无意中从再生铜工业中生产和释放。不同来源PBDD/Fs、PBDEs和Br-PAHs的平均质量排放因子分别为10.0、5.21 × 10 ³和7.24 × 10 ³ μg t ^-1，分别。因此，再生铜工业中溴化持久性有机污染物（POPs）的排放值得关注。由于可能存在“记忆效应”，从气冷阶段到烟囱出口，溴化 POPs 浓度增加，再生 POPs 主要是低溴化同系物。溴化 POPs 与相应氯化类似物在同一过程中的比较表明，Br-PAHs 的形成途径与氯化 PAHs 的形成途径一致。然而，与氯化二恶英和呋喃不同，PBDD/Fs 也可以由 PBDEs 作为前体形成，导致高溴化呋喃的含量明显增加。因此，抑制 PBDEs 的无意生成对于控制溴化 POPs 排放具有重要意义。

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Variation in the formation characteristics of PBDD/F, brominated PAH, and PBDE congeners along the secondary copper smelting processes

Simultaneous determination of 58 congeners of polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs), brominated polycyclic aromatic hydrocarbons (Br-PAHs), and polybrominated diphenyl ethers (PBDEs) from multiple stages of industrial-scale secondary copper smelting plants was conducted with the aim of understanding their variations and control. In addition to the historical manufacture of PBDEs as brominated flame retardants, this study confirmed that PBDEs can be unintentionally produced and released from the secondary copper industry. The average mass emission factors of PBDD/Fs, PBDEs, and Br-PAHs from different sources were 10.0, 5.21 × 10³, and 7.24 × 10³ μg t⁻¹, respectively. Therefore, the emission of brominated persistent organic pollutants (POPs) in the secondary copper industry should be of concern. The concentration of brominated POPs increased from the gas cooling stage to stack outlet due to the possible “memory effect” and the regenerated POPs were mainly low-brominated homologs. A comparison of brominated POPs with corresponding chlorinated analogs in the same process indicated that the formation pathway of Br-PAHs was consistent with that of chlorinated PAHs. However, unlike chlorinated dioxins and furans, PBDD/Fs can also be formed from PBDEs as precursors, leading to obvious increases in highly brominated furans. Therefore, inhibiting the unintentional formation of PBDEs is important for controlling brominated POPs emissions.

更新日期：2022-07-20

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