Search results for "air filtration"

showing 2 items of 2 documents

An experimental search for a correlation between outdoor 222Rn concentration and 210Pb activity in air particulate samples

2018

This work was aimed to search for a correlation between outdoor 222Rn air concentration and 210Pb activity in particulate samples collected on a filter. The existence of a correlation could support the hypothesis that both 222Rn and its long-lived product 210Pb are embedded into the same air masses and undergo the same air transport phenomena. Lead-210 activity was determined by means of gamma ray spectrometric measurement carried out a few days after the sampling whereas 222Rn concentration was measured through a commercial monitor. Experimental tests allowed to obtain a weak correlation between 222Rn and 210Pb air concentration as a preliminary result due to high uncertainties of outdoor …

222Rn 210Pb air filtration atmospheric particulate gamma-ray spectrometry222RnSettore ING-IND/20 - Misure E Strumentazione Nucleariair filtrationParticulates010403 inorganic & nuclear chemistry01 natural sciences0104 chemical sciencesCorrelationatmospheric particulateNuclear Energy and Engineeringgamma ray spectrometryEnvironmental chemistrylcsh:QC770-798Environmental sciencelcsh:Nuclear and particle physics. Atomic energy. RadioactivitySafety Risk Reliability and Quality210PbNuclear Technology and Radiation Protection
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Nanofibrous Polymeric Membranes for Air Filtration Application: A Review of Progress after the COVID‐19 Pandemic

2023

Air pollution is one of the major global problems causing around 7 million dead per year. In fact, a connection between infectious disease transmission, including COVID-19, and air pollution has been proved: COVID-19 consequences on human health are found to be more severe in areas characterized by high levels of particulate matter (PM). Therefore, after the COVID-19 pandemic, the production of air filtration devices with high filtration efficiency has gained more and more attention. Herein, a review of the post-COVID-19 pandemic progress in nanofibrous polymeric membranes for air filtration is provided. First, a brief discussion on the different types of filtration mechanism and the key pa…

Settore ING-IND/22 - Scienza E Tecnologia Dei MaterialiPolymers and PlasticsGeneral Chemical EngineeringOrganic Chemistryair filtration air pollution COVID-19 fibers nanofibers membranes particulate matter polymeric membranesMaterials ChemistryMacromolecular Materials and Engineering
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