RCEES OpenIR  > 环境化学与生态毒理学国家重点实验室
Formation of Environmentally Persistent Free Radicals during Thermochemical Processes and their Correlations with Unintentional Persistent Organic Pollutants
Liu, Xiaoyun; Yang, Lili; Liu, Guorui; Zheng, Minghui
2021-05-18
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume55Issue:10Pages:6529-6541
AbstractAttention is increasingly being paid to environmentally persistent free radicals (EPFRs), which are organic pollutants with the activities of free radicals and stabilities of organic pollutants. EPFRs readily form during thermal processes through the decomposition of organic precursors such as phenols, halogenated phenols, and quinone-type molecules, which are also important precursors of toxic unintentionally produced persistent organic pollutants (UPOPs). We have found that EPFRs are important intermediates for UPOP formation during thermalrelated processes. However, interest in EPFRs is currently mostly focused on the toxicities and formation mechanisms of EPFRs themselves. Little information is available on the important roles EPFRs play in toxic UPOP formation during thermal processes. Here, we review the mechanisms involved in EPFR formation and transformation into UPOPs during thermal processes. The review is focused on typical EPFRs, including cyclopentadiene, phenoxy, and semiquinone radicals. The reaction temperature, metal species present, and oxygen concentration strongly affect EPFR and UPOP formation during thermal-related processes. Gaps in current knowledge and future directions for research into EPFR and UPOP formation, transformation, and control are presented. Understanding the relationships between EPFRs and UPOPs will allow synergistic control strategies to be developed for thermalrelated industrial sources of EPFRs and UPOPs.
Department环境化学与生态毒理学国家重点实验室
Keywordenvironmentally persistent free radical thermochemical reaction formation mechanism organic pollutant polyphenol
WOS Research AreaEngineering, Environmental ; Environmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45732
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Coll Resource & Environm, Beijing 100049, Peoples R China
3.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310000, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaoyun,Yang, Lili,Liu, Guorui,et al. Formation of Environmentally Persistent Free Radicals during Thermochemical Processes and their Correlations with Unintentional Persistent Organic Pollutants[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(10):6529-6541.
APA Liu, Xiaoyun,Yang, Lili,Liu, Guorui,&Zheng, Minghui.(2021).Formation of Environmentally Persistent Free Radicals during Thermochemical Processes and their Correlations with Unintentional Persistent Organic Pollutants.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(10),6529-6541.
MLA Liu, Xiaoyun,et al."Formation of Environmentally Persistent Free Radicals during Thermochemical Processes and their Correlations with Unintentional Persistent Organic Pollutants".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.10(2021):6529-6541.
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