The influence of UV-light irradiation and stable Criegee intermediate scavengers on secondary organic aerosol formation from isoprene ozonolysis
文献类型：期刊论文
| 作者 | Song, Min; Zhang, Chenglong; Wu, Hai; Mu, Jichun; Ma, Zhuobiao; Liu, Pengfei; Liu, Junfeng; Zhang, Yuanyuan; Chen, Chun ; Fu, Yuzhen
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| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 191页码:116-125 |
| 关键词 | Isoprene ozonolysis SOA formation Stable Criegee Intermediate FTICR-MS Oligomers |
| ISSN号 | 1352-2310 |
| 文献子类 | Article |
| 英文摘要 | The formation of secondary organic aerosol (SOA) from isoprene ozonolysis was investigated using a FEP Teflon reactor with and without the presence of H2O, CO, SO2 and UV-light irradiation (365 nm) to reveal their possible influence on SOA formation. Compared with the base experiment (isoprene + O-3) under dark condition, the presence of 2000 ppm H2O and 1000 ppm CO could remarkably suppress SOA formation from isoprene ozonolysis, with SOA yields reduced from 2.96% to 1.47% and 2.08%, respectively. The evident reduction of SOA yields from isoprene ozonolysis with the presence of H2O and CO was mainly ascribed to the suppression of Stable Criegee Intermediates (SCIs). In contrast, the particle yield from isoprene ozonolysis with the presence of SO2 pronouncedly increased from 2.96% to 57.9%, suggesting that the oxidation of SO2 by SCIs made great contribution to the particle formation. The SOA or particle yields from all the reaction systems with and without presence of H2O, CO and SO2 reduced more than 27% under the UV-light irradiation with respect to dark condition, which were mainly attributed to the SCIs photolysis. The contribution of OH channel to SOA formation from isoprene ozonolysis was estimated to be less than 30%. Considering the 50% reduction of SOA yield from isoprene ozonolysis under light irradiation, the disappearance of the component with low O:C and H:C and high molecule weight in the SOA sample collected under light irradiation indicated the polymerization of unsaturated SCIs might be an important SOA formation channel besides the oligomerization of SCIs, HCHO, and MACR from isoprene ozonolysis under dark condition. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40791]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Song, Min,Zhang, Chenglong,Wu, Hai,et al. The influence of UV-light irradiation and stable Criegee intermediate scavengers on secondary organic aerosol formation from isoprene ozonolysis[J]. ATMOSPHERIC ENVIRONMENT,2018,191:116-125. |
| APA | Song, Min.,Zhang, Chenglong.,Wu, Hai.,Mu, Jichun.,Ma, Zhuobiao.,...&Mu, Yujing.(2018).The influence of UV-light irradiation and stable Criegee intermediate scavengers on secondary organic aerosol formation from isoprene ozonolysis.ATMOSPHERIC ENVIRONMENT,191,116-125. |
| MLA | Song, Min,et al."The influence of UV-light irradiation and stable Criegee intermediate scavengers on secondary organic aerosol formation from isoprene ozonolysis".ATMOSPHERIC ENVIRONMENT 191(2018):116-125. |
入库方式： OAI收割
来源：生态环境研究中心
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