Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Zhang, Xiaohui1,2; Zhang, Xiaoxiao1,2; Talifu, Dilinuer1,2; Ding, Xiang3,4 ; Wang, Xinming3,4; Abulizi, Abulikemu1,2; Zhao, Qilong1,2; Liu, Bowen1,2
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| Secondary formation and influencing factors of WSOC in PM2.5 over Urumqi, NW China | |
| Source Publication | ATMOSPHERIC ENVIRONMENT
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| ISSN | 1352-2310 |
| 2023-01-15 | |
| Volume | 293Pages:7 |
| DOI | 10.1016/j.atmosenv.2022.119450 |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| Abstract | 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. |
| Keyword | PM2 5 WSOC LWC Acidity Urumqi |
| WOS ID | WOS:000900091000003 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/71494 |
| Collection | 中国科学院广州地球化学研究所 |
| Corresponding Author | Talifu, Dilinuer; Ding, Xiang |
| Affiliation | 1.Xinjiang Univ, Sch Chem Engn & Technol, State Key Lab Chem & Utilizat Carbon Based Energy, Urumqi 830017, Peoples R China 2.Xinjiang Univ, Coll Chem Engn, Xinjiang Key Lab Coal Clean Convers & Chem Engn, Urumqi 830017, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Guangdong Hong Kong Macao Joint Lab Environm Poll, Guangzhou 510640, Peoples R China |
| Recommended Citation 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. |
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