Articles | Volume 11, issue 9
https://doi.org/10.5194/amt-11-5087-2018
https://doi.org/10.5194/amt-11-5087-2018
Research article
 | 
07 Sep 2018
Research article |  | 07 Sep 2018

Real-time measurements of gas-phase organic acids using SF6 chemical ionization mass spectrometry

Theodora Nah, Yi Ji, David J. Tanner, Hongyu Guo, Amy P. Sullivan, Nga Lee Ng, Rodney J. Weber, and L. Gregory Huey

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Theodora Nah on behalf of the Authors (24 May 2018)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (04 Jun 2018) by Bin Yuan
RR by Anonymous Referee #1 (19 Jun 2018)
ED: Reconsider after major revisions (26 Jun 2018) by Bin Yuan
AR by Theodora Nah on behalf of the Authors (04 Aug 2018)  Author's response   Manuscript 
ED: Publish subject to minor revisions (review by editor) (12 Aug 2018) by Bin Yuan
AR by Theodora Nah on behalf of the Authors (15 Aug 2018)  Author's response   Manuscript 
ED: Publish as is (24 Aug 2018) by Bin Yuan
AR by Theodora Nah on behalf of the Authors (24 Aug 2018)  Author's response   Manuscript 
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Short summary
The sources and atmospheric chemistry of gas-phase organic acids are currently poorly understood, due in part to the limited range of measurement techniques available. We evaluated the use of SF6 as a sensitive and selective chemical ionization reagent ion for real-time measurements of gas-phase organic acids at a rural site in Yorkville, Georgia. We found that ambient concentrations of organic acids ranged from a few ppt to several ppb, and are dependent on ambient temperature.