Articles | Volume 4, issue 2
https://doi.org/10.5194/ar-4-577-2026
https://doi.org/10.5194/ar-4-577-2026
Research article
 | 
10 Nov 2026
Research article |  | 10 Nov 2026

Measurements of NaCl in ambient air with a capture vaporizer-ToF-ACSM

Marije van den Born, Hengjia Ou, Jan Mulder, Jinglan Fu, Harald Saathoff, and Ulrike Dusek

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Short summary
Sea spray aerosol plays an important role in climate and atmospheric chemistry, yet sea salt is rarely quantified by online mass spectrometers due to its refractory nature. This study shows that a capture vaporizer time-of-flight aerosol chemical speciation monitor can detect sea salt aerosol using Na and NaCl fragments. Laboratory and field results demonstrate robust real-time measurements of NaCl surface area, while accurate mass concentrations require particle size information.
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