{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:14:37Z","timestamp":1760242477077,"version":"build-2065373602"},"reference-count":32,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T00:00:00Z","timestamp":1505088000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented. Such a system wants to go beyond the traditional technique (gravimetric analysis), allowing for a double monitoring approach: the traditional gravimetric analysis as well as the optical spectroscopic analysis of the scattering on the same filters in steady-state conditions. The experimental data are interpreted in terms of light percolation through highly scattering matter by means of the stretched exponential evolution. CleAir has been applied to investigate the daily distribution of particulate matter within the Napoleonic Museum in Rome as a test case.<\/jats:p>","DOI":"10.3390\/s17092076","type":"journal-article","created":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T10:28:46Z","timestamp":1505125726000},"page":"2076","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["CleAir Monitoring System for Particulate Matter: A Case in the Napoleonic Museum in Rome"],"prefix":"10.3390","volume":"17","author":[{"given":"Eugenio","family":"Fazio","sequence":"first","affiliation":[{"name":"Department of Fundamental and Applied Science for Engineering, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]},{"given":"Valerio","family":"Bonacquisti","sequence":"additional","affiliation":[{"name":"Department of Fundamental and Applied Science for Engineering, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]},{"given":"Marta","family":"Di Michele","sequence":"additional","affiliation":[{"name":"Department of Physics, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]},{"given":"Francesca","family":"Frasca","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]},{"given":"Angelo","family":"Chianese","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering Materials and Environment, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7435-1426","authenticated-orcid":false,"given":"Anna","family":"Siani","sequence":"additional","affiliation":[{"name":"Department of Physics, Sapienza Universit\u00e0 di Roma, 00185 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2017,9,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1038\/nature18307","article-title":"Paris Agreement climate proposals need a boost to keep warming well below 2 \u00b0C","volume":"534","author":"Rogelj","year":"2016","journal-title":"Nature"},{"key":"ref_2","unstructured":"(2002). 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