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Sökning: WFRF:(Fraschetti Elena)

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1.
  • Buzzin, Alessio, et al. (författare)
  • Assessing the consequences of prolonged usage of disposable face masks
  • 2022
  • Ingår i: Scientific Reports. - : Nature Portfolio. - 2045-2322. ; 12:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Due to the SARS-CoV-2 outbreak, wearing a disposable face mask has become a worldwide daily routine, not only for medical operators or specialized personnel, but also for common people. Notwithstanding the undeniable positive effect in reducing the risk of virus transmission, it is important to understand if a prolonged usage of the same face mask can have effectiveness on filtering capability and potential health consequences. To this aim, we present three investigations. A survey, carried out in central Italy, offers an overview of the distorted public awareness of face mask usage. A functional study shows how prolonged wearing leads to substantial drops in humid air filtration efficiency. Finally, a morphological analysis reports the proliferation of fungal or bacteria colonies inside an improperly used mask. Our study highlights therefore that wearing a face mask is really beneficial only if it is used correctly.
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2.
  • Fraschetti, Elena, et al. (författare)
  • Characterization of Disposable Facemasks for COVID-19 Through Colorimetric Analysis
  • 2022
  • Ingår i: NanoInnovation 2021. - : Institute of Physics (IOP).
  • Konferensbidrag (refereegranskat)abstract
    • Many aspects of the world population's daily life have been recently changed by the events following the SARS-COV-2 pandemic outbreak. Among all the consequences, wearing face masks has become a common routine to protect from virus transmission risks. This work presents a simple colorimetric system able to detect the carbon dioxide (CO2) saturation inside a disposable face mask, which is useful to determine the level of wear and degradation and to visually provide indications on its disposal time. The experiments were carried out by wearing a FFP2 face mask externally treated with a phenolphthalein solution and including in its breathing zone a CO2 sensor. Changes in face mask color were recorded by a camera and analyzed with ImageJ. A strong correspondence was found between the high values of CO2 detected by the sensor and the analyzed data. The results are promising and suggest further efforts in developing easy-to-use colorimetric methods as a visual indicator of the life cycle of a disposable face mask.
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