Atmospheric and Climate Sciences

Volume 15, Issue 2 (April 2025)

ISSN Print: 2160-0414   ISSN Online: 2160-0422

Google-based Impact Factor: 1.38  Citations  

Nanoparticles Sampling inside the International Space Station

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DOI: 10.4236/acs.2025.152018    31 Downloads   178 Views  

ABSTRACT

Nanoparticles were collected inside the International Space Station (ISS) with a thermophoretic sampler named Diapason (DTM Technologies, Modena, Italy), a device based on thermophoresis, a phenomenon whereby small particles suspended in a gas with a temperature gradient move towards the lower temperature region. Particles measuring from a few nanometers up to about 2 μm were deposited on transmission electron microscope grids and examined under a transmission electron microscope. The particles sampled were prevalently agglomerates of primary particles. Many of the aggregates examined were made up of multiple elements, prevalently Ca, Al, Si, K, Ca, Na, S, Ni and Ti. The preliminary results showed that the Diapason thermophoretic sampler works satisfactorily even in microgravity conditions and allows the measurement of ultrafine particles, which are the most dangerous for human health.

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Cassese, F. , Bartolamasi, F. , Santachiara, D. and Santachiara, G. (2025) Nanoparticles Sampling inside the International Space Station. Atmospheric and Climate Sciences, 15, 362-372. doi: 10.4236/acs.2025.152018.

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