Respirator sterilization raw data

Published: 2 July 2020| Version 1 | DOI: 10.17632/tf62c3ckhr.1
Contributors:
Jan Malec,
Luka Pirker,
Anja Pogačnik Krajnc,
Vladimir Radulović,
Anton Gradišek,
Andreja Jelen,
Maja Remškar,
Igor B. Mekjavić,
Janez Kovač,
Miran Mozetič,
Luka Snoj

Description

The workbooks with the name formatted as $doserate-$resp_type-$freq(-$rtype) are particle removal efficiency measurements for respirators that were irradiated with $doserate dose rate of ionizing radiation of type $rtype. $resp_type indicates the respirator type used. The nanoparticle total concentration (TC) and time-dependant size distribution was measured with a Scanning Mobility Particle Sizer (SMPS model 3080 L85; TSI Co., Shoreview, MN, USA) equipped with a desiccator, soft X-ray neutralizer, long differential mobility analyser (DMA), and a water condensation particle counter (WCPC; model 3785; TSI). The electrical mobility diameter of counted nanoparticles was from 13 nm to 572.5 nm. The air flow at the inlet of the SMPS was 4.1 l/min. The aerosol standard ISO 12103-1 A1 was dispersed in the sampling chamber during the measurements with a Topas SAG 410 aerosol generator. The Raman spectra was recorded using a WITec Alpha 300 RS scanning confocal Raman microscope in backscattered geometry with a polarized Nd:YAG laser operating at the 532 nm wavelength. The laser beam was focused through a 20x/0.4 microscope objective. X-ray photoelectron spectroscopy (XPS) analysis was carried out on a TFA XPS spectrometer (Physical Electronics inc.). The analyzed area was 0.4 mm in diameter and about 3–5 nm in depth.

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