Articles | Volume 16, issue 21
Research article
08 Nov 2023
Research article |  | 08 Nov 2023

Measurements of volatile organic compounds in ambient air by gas-chromatography and real-time Vocus PTR-TOF-MS: calibrations, instrument background corrections, and introducing a PTR Data Toolkit

Andrew R. Jensen, Abigail R. Koss, Ryder B. Hales, and Joost A. de Gouw


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-842', Anonymous Referee #1, 03 Jul 2023
    • AC1: 'Reply on RC1', Andrew Ryan Jensen, 18 Sep 2023
  • RC2: 'Comment on egusphere-2023-842', Anonymous Referee #4, 08 Aug 2023
    • AC2: 'Reply on RC2', Andrew Ryan Jensen, 18 Sep 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Andrew Ryan Jensen on behalf of the Authors (18 Sep 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (19 Sep 2023) by Pierre Herckes
RR by Anonymous Referee #4 (29 Sep 2023)
ED: Publish as is (30 Sep 2023) by Pierre Herckes
AR by Andrew Ryan Jensen on behalf of the Authors (30 Sep 2023)
Short summary
Quantification of a wide range of volatile organic compounds by proton-transfer-reaction mass spectrometry (PTR-MS) can be achieved with direct calibration of only a subset of compounds, characterization of instrument response, and simple reaction kinetics. We characterized our Vocus PTR-MS and developed a toolkit as a guide through this process. A catalytic zero air generator provided the lowest detection limits, and short, frequent calibrations informed variability in instrument response.