| 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 Publication | JOURNAL OF HAZARDOUS MATERIALS
 |
| ISSN | 0304-3894 |
| Volume | 409Pages:- |
| Abstract | Environmentally 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 |
| Keyword | Environmentally persistent free radicals Personal exposure Air pollution Particulate matter Human risk |
| WOS Research Area | Engineering, Environmental ; Environmental Sciences |
| Document Type | 期刊论文 |
| Identifier | https://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 |
| Affiliation | 1.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):-. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Assessment of person（1367KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment