2025-03-04 AEROSOL SCIENCE AND TECHNOLOGY 2025 59(卷), 3(期), (357-369页)
In the last years, atmospheric simulation chambers and laboratory apparatus have emerged as a performing tool to mimic natural airborne mineral dust emitted from arid and semi-arid soils worldwide, and to investigate their role on climate, which largely depends on their broad size distribution and mineralogical composition. While the capability of generation and injecting realistic poly-dispersed mineral dust aerosols from their natural parent soils exists, this paper describes a new technical protocol for generating monodispersed submicron dust particles using an Aerodynamic Aerosol Classifier (AAC) and injecting them in a rigid atmospheric simulation chamber. Results demonstrate the ability of reproducing the fine mode of the size distribution of two different types of dust generated from natural soils. We demonstrate the repeatability of the modal position and the ability of achieving a minimum mass concentration of 50 mu g m-3 with three repeated injections of a maximum of 30 min. This protocol enhances the capability to study mineral dust's global effects and contributes to improving our understanding of its complex behavior in the atmosphere.
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