Articles | Volume 13, issue 10
Atmos. Meas. Tech., 13, 5551–5567, 2020
https://doi.org/10.5194/amt-13-5551-2020
Atmos. Meas. Tech., 13, 5551–5567, 2020
https://doi.org/10.5194/amt-13-5551-2020

Research article 20 Oct 2020

Research article | 20 Oct 2020

Nano-hygroscopicity tandem differential mobility analyzer (nano-HTDMA) for investigating hygroscopic properties of sub-10 nm aerosol nanoparticles

Ting Lei et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Ting Lei on behalf of the Authors (16 Aug 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (18 Aug 2020) by Charles Brock
AR by Ting Lei on behalf of the Authors (28 Aug 2020)  Author's response    Manuscript
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Short summary
We present the design of a nano-hygroscopicity tandem differential mobility analyzer (nano-HTDMA) apparatus that enables high accuracy and precision in hygroscopic growth measurements of aerosol nanoparticles with diameters less than 10 nm. We further introduce comprehensive methods for system calibration and validation of the performance of the system. We then study the size dependence of the deliquescence and the efflorescence of aerosol nanoparticles for sizes down to 6 nm.