Evaluation of Aeris mid-infrared absorption (MIRA), Picarro CRDS (cavity ring-down spectroscopy) G2307, and dinitrophenylhydrazine (DNPH)-based sampling for long-term formaldehyde monitoring efforts

Mouat, Asher P.; Siegel, Zelda A.; Kaiser, Jennifer

doi:https://doi.org/10.5194/amt-17-1979-2024

Articles | Volume 17, issue 7

https://doi.org/10.5194/amt-17-1979-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-17-1979-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 7

Research article

|

08 Apr 2024

Research article |

| 08 Apr 2024

Evaluation of Aeris mid-infrared absorption (MIRA), Picarro CRDS (cavity ring-down spectroscopy) G2307, and dinitrophenylhydrazine (DNPH)-based sampling for long-term formaldehyde monitoring efforts

Asher P. Mouat, Zelda A. Siegel, and Jennifer Kaiser

Data sets

KaiserLab-GeorgiaTech/long-term-HCHO-monitoring_efforts_datasets: long-term-HCHO-monitoring-efforts-datasets KaiserLab-GeorgiaTech https://doi.org/10.5281/zenodo.10855090

NARSTO EPA Supersite (SS) Atlanta 1999 Air Chemistry, Particulate Matter (PM), and Meteorological Data NASA/LARC/SD/ASDC https://doi.org/10.5067/ASDCDAAC/NARSTO/0060

Short summary

Three fast-measurement formaldehyde monitors were deployed at two field sites in Atlanta, GA, over 1 year. Four different zeroing methods were tested to develop an optimal field setup as well as procedures for instrument calibration. Observations agreed well after calibration but were much higher compared to the TO-11A monitoring method, which is the golden standard. Historical HCHO concentrations were compared with measurements in this work, showing a 22 % reduction in midday HCHO since 1999.