RCEES OpenIR  > 环境化学与生态毒理学国家重点实验室
Assessment of personal exposure to environmentally persistent free radicals in airborne particulate matter
Xu, Yang; Qin, Linjun; Liu, Guorui; Zheng, Minghui; Li, Da; Yang, Lili
2021-05-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume409Pages:-
AbstractEnvironmentally persistent free radicals (EPFRs) are a type of emerging contaminants. The EPFR species in airborne particulate matter are similar to carcinogenic tar paramagnetic species in cigarettes that can cause DNA damage. However, understanding on daily EPFR exposure levels and risks are lacking currently. We used personal aerosol exposure monitors worn by volunteers to assess EPFR exposure in a spatio-temporal, non-static manner. Daily individual exposure to EPFRs for urban residents in Beijing, China ranged from 1.11 x 10(17) to 7.42 x 10(17) spins/m(3) during the heating period (winter) and from 4.79 x 10(14) to 7.76 x 10(16) spins/m(3) during the non-heating period (summer). Carbon-centered radicals were dominant in winter, while oxygen-centered radicals were dominant in summer because of higher atmospheric oxidizing capacity contributing to oxidation reactions. Coal combustion in winter is a key influencing factor in EPFR exposure levels. An intuitional assessment was used to evaluate the inhalation risks of EPFRs by converting their concentrations in inhaled particulate matter to equivalents in cigarettes smoked. The assessment concluded that one urban resident may, on average, inhale the equivalent of 46 cigarettes per day in EPFRs. The health risks of these free radicals, especially during winter, should be researched in depth.
Department环境化学与生态毒理学国家重点实验室
KeywordEnvironmentally persistent free radicals Personal exposure Air pollution Particulate matter Human risk
WOS Research AreaEngineering, Environmental ; Environmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45663
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 Resources & Environm, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Sch Environm, Hangzhou Inst Adv Study, Hangzhou 310000, Peoples R China
Recommended Citation
GB/T 7714
Xu, Yang,Qin, Linjun,Liu, Guorui,et al. Assessment of personal exposure to environmentally persistent free radicals in airborne particulate matter[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,409:-.
APA Xu, Yang,Qin, Linjun,Liu, Guorui,Zheng, Minghui,Li, Da,&Yang, Lili.(2021).Assessment of personal exposure to environmentally persistent free radicals in airborne particulate matter.JOURNAL OF HAZARDOUS MATERIALS,409,-.
MLA Xu, Yang,et al."Assessment of personal exposure to environmentally persistent free radicals in airborne particulate matter".JOURNAL OF HAZARDOUS MATERIALS 409(2021):-.
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