Articles | Volume 14, issue 7
Research article
21 Jul 2021
Research article |  | 21 Jul 2021

A dual-droplet approach for measuring the hygroscopicity of aqueous aerosol

Jack M. Choczynski, Ravleen Kaur Kohli, Craig S. Sheldon, Chelsea L. Price, and James F. Davies


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-108', Anonymous Referee #1, 23 May 2021
    • AC1: 'Reply on RC1', James Davies, 02 Jun 2021
  • RC2: 'Comment on amt-2021-108', Anonymous Referee #2, 31 May 2021
    • AC2: 'Reply on RC2', James Davies, 02 Jun 2021
  • RC3: 'Comment on amt-2021-108', Anonymous Referee #2, 02 Jun 2021
    • AC3: 'Reply on RC3', James Davies, 02 Jun 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by James Davies on behalf of the Authors (22 Jun 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (23 Jun 2021) by Mingjin Tang
AR by James Davies on behalf of the Authors (24 Jun 2021)  Author's response    Manuscript
Short summary
Relative humidity (RH) and hygroscopicity play an important role in regulating the physical, chemical, and optical properties of aerosol. In this work, we develop a new method to characterize hygroscopicity using particle levitation. We levitate two droplets with an electrodynamic balance and measure their size with light-scattering methods using one droplet as a probe of the RH. We demonstrate highly accurate and precise measurements of the RH and hygroscopic growth of a range of samples.