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Mathematical form factor studies on the effect of water on airborne particles morphology using a bi-dimensional TEM image processing

TitleMathematical form factor studies on the effect of water on airborne particles morphology using a bi-dimensional TEM image processing
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2009
AuthorsCucchiella, R., Falini G., Ferri M., Stracquadanio Milena, and Trombini C.
JournalJournal of Environmental Monitoring
Volume11
Pagination181-186
ISSN14640325
Keywordsairborne particle, article, controlled study, dry deposition, electron, Image analysis, mathematical computing, mathematical variable, Microscopy, Models, particle size, particulate matter, priority journal, Soot, Surface properties, Theoretical, Transmission, Transmission electron microscopy, Water, wet deposition
Abstract

Mathematical morphology is a tool for extracting image components that are useful for representation and description. The technique consists of a set-theoretic method of image analysis providing a quantitative description of geometrical structures. A simple application of mathematical morphology to a bi-dimensional processing of TEM images of airborne particles allows us to distinguish between particles grown and/or transported in atmosphere under dry conditions or in rainy days by a simple comparison of the corresponding image form factors. The form factors range in the 0.385-0.031 interval in the case of particles sampled in rainy days, and in the 0.103-0.006 interval in the case of non-rainy conditions. The same classification criterion was applied to filters collected under dry conditions and plunged in water. The results demonstrate that a morphological change may be artificially induced to the particle structure. The artificially wet particles, indeed, display an apparent contraction of their structures evidenced by a two-fold increase of the average values of their form factors. The last experiment roughly simulates the impact of particles on membranes of the respiratory tract. © The Royal Society of Chemistry.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-58149391247&doi=10.1039%2fb806940a&partnerID=40&md5=b9745281b027ed8df7a9d39d7189b46d
DOI10.1039/b806940a
Citation KeyCucchiella2009181