High resolution characterization of a sheathed axisymmetric variable supersaturation condensation particle sizer

Attoui, Michel; Perez-Lorenzo, Luis Javier; Brock, C. A.; Mora, Juan Fernández de la

doi:10.1016/j.jaerosci.2022.106112

Cited by 8 publications

(2 citation statements)

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“…However, unlike in a mixing-type CPC, the adiabatic mixing does not activate the particles, but in fact the activation is based on a laminar diffusive supersaturation. In this, the working principle of the PSM 2.0 is similar to that of recent version of the VSCPS technology by Attoui et al (2023), with their two-flow mixing system.…”

Section: Conceptual Backgroundmentioning

confidence: 93%

“…The only parameter which is varied is the ratio of vapor amount arriving to the mixing section from the saturator. Similarly as in the instrument of Attoui et al (2023), two mass flow controllers are operated in tandem to produce a constant 2 lpm flow rate. One mass flow controller regulates the amount of dry air reaching the heater prior the mixing section, while the other one controls the flow passing through the saturator prior entering the same heater element as the dry flow (Figure 1).…”

Section: Conceptual Backgroundmentioning

confidence: 99%

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Pushing nano-aerosol measurements to a new decade – Technical note on Airmodus Particle Size Magnifier 2.0

Sulo,

Enroth,

Pajunoja

et al. 2023

Preprint

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Abstract. Accurate measurement of the size distribution of sub-10 nm aerosol particles is still a challenge. Here we introduce a novel version of the Airmodus particle size magnifier (PSM), which is a condensation particle counter-based instrument with a sizing range of 1–12 nm. The extended size range compared to the earlier PSM version enables direct detection of forming clusters and particles as well as studying their growth processes without the challenges related to particle charging. It also gives an overlap between the activation size distribution measurements with the PSM and mobility size distribution measurements with conventional mobility particle sizers. We compared the performance of PSM 2.0 to a mobility particle size spectrometer, the original A10 particle size magnifier and a Neutral Cluster and Air Ion Spectrometer (NAIS) during field measurements. Also, calibration results were compered against the A10 instrument. The results show that PSM 2.0 is able to activate sub-2 nm clusters and the concentration and size distribution between 2–12 nm compare well especially with the NAIS.

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Section: Conceptual Backgroundmentioning

confidence: 93%

Section: Conceptual Backgroundmentioning

confidence: 99%