Articles | Volume 15, issue 9
Research article
13 May 2022
Research article |  | 13 May 2022

Long-term behavior and stability of calibration models for NO and NO2 low-cost sensors

Horim Kim, Michael Müller, Stephan Henne, and Christoph Hüglin


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-433', Anonymous Referee #1, 17 Jan 2022
  • RC2: 'Comment on amt-2021-433', Laurent Spinelle, 25 Feb 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Horim Kim on behalf of the Authors (31 Mar 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to technical corrections (04 Apr 2022) by Albert Presto
AR by Horim Kim on behalf of the Authors (07 Apr 2022)  Author's response    Manuscript
Short summary
In this study, the performance of electrochemical sensors for NO and NO2 for measuring air quality was determined over a longer operating period. The performance of NO sensors remained reliable for more than 18 months. However, the NO2 sensors showed decreasing performance over time. During deployment, we found that the NO2 sensors can distinguish general pollution levels, but they proved unsuitable for accurate measurements due to significant biases.