Development and validation of a NOx+ ratio method for the quantitative separation of inorganic and organic nitrate aerosol using a unit-mass-resolution time-of-flight aerosol chemical speciation monitor equipped with a capture vaporizer (CV-UMR-ToF-ACSM)

Nursanto, Farhan R.; Day, Douglas A.; Meinen, Roy; Holzinger, Rupert; Saathoff, Harald; Fu, Jinglan; Mulder, Jan; Dusek, Ulrike; Fry, Juliane L.

doi:https://doi.org/10.5194/amt-18-3051-2025

Articles | Volume 18, issue 13

https://doi.org/10.5194/amt-18-3051-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-18-3051-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 13

Research article

|

11 Jul 2025

Research article |

| 11 Jul 2025

Development and validation of a NO_x⁺ ratio method for the quantitative separation of inorganic and organic nitrate aerosol using a unit-mass-resolution time-of-flight aerosol chemical speciation monitor equipped with a capture vaporizer (CV-UMR-ToF-ACSM)

Farhan R. Nursanto, Douglas A. Day, Roy Meinen, Rupert Holzinger, Harald Saathoff, Jinglan Fu, Jan Mulder, Ulrike Dusek, and Juliane L. Fry

Supplement

https://doi.org/10.5194/amt-18-3051-2025-supplement

Data sets

Evaluation of the New Capture Vaporizer for Aerosol Mass Spectrometers (AMS): Elemental Composition and Source Apportionment of Organic Aerosols (OA) W. Hu et al. https://doi.org/10.1021/acsearthspacechem.8b00002

Short summary

It is of increasing importance to monitor nitrate pollution that can harm ecosystems. However, commonly used aerosol monitoring equipment cannot distinguish inorganic from organic forms of nitrate, which may have different consequences for the environment. We describe a method to differentiate types of nitrates that can be applied to ambient monitoring to improve understanding of its formation and impact.