Secondary formation and influencing factors of WSOC in PM2.5 over Urumqi, NW China
文献类型：期刊论文
| 作者 | Zhang, Xiaohui1,4; Zhang, Xiaoxiao1,4; Talifu, Dilinuer1,4; Ding, Xiang2,3; Wang, Xinming2,3; Abulizi, Abulikemu1,4; Zhao, Qilong1,4; Liu, Bowen1,4 |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2023-01-15 |
| 卷号 | 293页码:7 |
| 关键词 | PM2 5 WSOC LWC Acidity Urumqi |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2022.119450 |
| 英文摘要 | Exploring the secondary formation of water-soluble organic carbon (WSOC) and its influencing factors is critical to understand the impact of WSOC on climate change and air quality. In this study, PM2.5 samples were collected from Sep.2017 to Aug.2018 in Urumqi, Northwest China. These samples were analyzed for WSOC, organic and element carbon (OC, EC), and water-soluble ions. The levels of WSOC ranged from 0.57 to 19.7 mu g C/m3 with an annual mean of 6.08 +/- 3.50 mu g C/m3, accounting for 53% of OC. The observed ratios of WSOC to OC (0.35-0.77) were within the range of those for biomass burning and secondary organic aerosol (SOA). In addition, WSOC was positively correlated with the biomass burning tracer (K+) and secondary species (sulfate, nitrate, and ammo-nium). All of these observational evidences indicated that atmospheric WSOC over Urumqi were mainly from biomass burning and SOA. Based on a K-tracer approach, we estimated WSOC from biomass burning (WSOCBB) and SOA (WSOCsec). Our results suggested that WSOCsec was dominated over WSOCBB in four seasons with the highest level in winter (8.22 +/- 3.82 mu g C/m3) and the lowest in summer (2.91 +/- 1.63 mu g C/m3). The WSOCsec concentrations and WSOCsec fractions in OC were high under the conditions of high relative humidity, low temperature and wind speed. WSOCsec was positively correlated with liquid water content (LWC) but exhibited no dependence on aerosol acidity (in-situ pH). This indicated that the heterogeneous formation of WSOCsec in the air of Urumqi was largely associated with LWC rather than acidity. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000900091000003 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/71493]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Talifu, Dilinuer; Ding, Xiang |
| 作者单位 | 1.Xinjiang Univ, Sch Chem Engn & Technol, State Key Lab Chem & Utilizat Carbon Based Energy, Urumqi 830017, Peoples R China 2.Guangdong Hong Kong Macao Joint Lab Environm Poll, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Xinjiang Univ, Coll Chem Engn, Xinjiang Key Lab Coal Clean Convers & Chem Engn, Urumqi 830017, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaohui,Zhang, Xiaoxiao,Talifu, Dilinuer,et al. Secondary formation and influencing factors of WSOC in PM2.5 over Urumqi, NW China[J]. ATMOSPHERIC ENVIRONMENT,2023,293:7. |
| APA | Zhang, Xiaohui.,Zhang, Xiaoxiao.,Talifu, Dilinuer.,Ding, Xiang.,Wang, Xinming.,...&Liu, Bowen.(2023).Secondary formation and influencing factors of WSOC in PM2.5 over Urumqi, NW China.ATMOSPHERIC ENVIRONMENT,293,7. |
| MLA | Zhang, Xiaohui,et al."Secondary formation and influencing factors of WSOC in PM2.5 over Urumqi, NW China".ATMOSPHERIC ENVIRONMENT 293(2023):7. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。