Seasonal variation of driving factors of ambient PM2.5 oxidative potential in Shenzhen, China
文献类型：期刊论文
| 作者 | Xing, Chunbo4,6; Wang, Yixiang4; Yang, Xin1,3,4; Zeng, Yaling4; Zhai, Jinghao4; Cai, Baohua4; Zhang, Antai4; Fu, Tzung-May4; Zhu, Lei4; Li, Ying2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 862页码:10 |
| 关键词 | Dithiothreitol Hydroxyl radical PM2 5 Oxidative potential Emission source Seasonal variation |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.160771 |
| 英文摘要 | Reactive oxygen species (ROS) play a central role in health effects of ambient fine particulate matter (PM2.5). In this work, we screened for efficient and complementary oxidative potential (OP) measurements by comparing the response values of multiple chemical probes (OPDTT, OPOH, OPGSH) to ambient PM2.5 in Shenzhen, China. Combined with meteorological condition and PM2.5 chemical composition analysis, we explored the effects of different chemical components and emission sources on the ambient PM2.5 OP and analyzed their seasonal variations. The results show that OPmDTT(mass-normalized) and OPmGSH-SLF were highly correlated (r = 0.77). OPDTT was mainly influenced by organic carbon, while OPOH was highly dominated by heavy metals. The combination of OPDTT and OPOH provides an efficient and comprehensive measurement of OP. Temporally, the OPs were substantially higher in winter than in summer (1.4 and 4 times higher for OPmDTT and OPmOH, respectively). The long-distance transported biomass burning sources from the north dominated the OPDTT in winter, while the ship emissions mainly influenced the summer OP. The OPmDTT increased sharply with the decrease of PM2.5 mass concentration, especially when the PM2.5 concentration was lower than 30 mu g/m3. The huge differences in wind fields between the winter and summer cause considerable variations in PM2.5 concentrations, components, and OP. Our work emphasizes the necessity of long-term, multi-method, multi-component assessment of the OP of PM2.5. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000901732400008 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/71490]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Yang, Xin |
| 作者单位 | 1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, 1088 Xueyuan Ave, Shenzhen, Guangdong, Peoples R China 2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China 3.Guangdong Prov Observat & Res Stn Coastal Atmosphe, Shenzhen 518055, Guangdong, Peoples R China 4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen Key Lab Precis Measurement & Early Warnin, Shenzhen 518055, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 6.Harbin Inst Technol, Sch Environm, Harbin 150001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing, Chunbo,Wang, Yixiang,Yang, Xin,et al. Seasonal variation of driving factors of ambient PM2.5 oxidative potential in Shenzhen, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,862:10. |
| APA | Xing, Chunbo.,Wang, Yixiang.,Yang, Xin.,Zeng, Yaling.,Zhai, Jinghao.,...&Zhang, Yanli.(2023).Seasonal variation of driving factors of ambient PM2.5 oxidative potential in Shenzhen, China.SCIENCE OF THE TOTAL ENVIRONMENT,862,10. |
| MLA | Xing, Chunbo,et al."Seasonal variation of driving factors of ambient PM2.5 oxidative potential in Shenzhen, China".SCIENCE OF THE TOTAL ENVIRONMENT 862(2023):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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