Articles | Volume 23, issue 16
Research article
22 Aug 2023
Research article |  | 22 Aug 2023

Seasonal variations in the production of singlet oxygen and organic triplet excited states in aqueous PM2.5 in Hong Kong SAR, South China

Yuting Lyu, Yin Hau Lam, Yitao Li, Nadine Borduas-Dedekind, and Theodora Nah


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-739', Anonymous Referee #1, 12 May 2023
  • RC2: 'Comment on egusphere-2023-739', Cort Anastasio, 20 May 2023
  • AC1: 'Comment on egusphere-2023-739', Theodora Nah, 08 Jul 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Theodora Nah on behalf of the Authors (08 Jul 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (12 Jul 2023) by Sergey A. Nizkorodov
AR by Theodora Nah on behalf of the Authors (12 Jul 2023)  Author's response   Manuscript 
Short summary
We measured singlet oxygen (1O2*) and triplet excited states of organic matter (3C*) in illuminated aqueous extracts of PM2.5 collected in different seasons at different sites in Hong Kong SAR, South China. In contrast to the locations, seasonality had significant effects on 3C* and 1O2* production due to seasonal variations in long-range air mass transport. The steady-state concentrations of 3C* and 1O2* correlated with the concentration and absorbance of water-soluble organic carbon.
Final-revised paper