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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsSylvie MOTELLIER, Simon CLAVAGUERA, Korian LHAUTE, Olivier PONCELET
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The present invention relates to a method for impregnating a filter having pores suitable for retaining particles within them that may be present in a flow of air suitable for passing through the filter, according to which the filter made up of a polymer membrane is impregnated with one or more organometallic salts by applying a treatment using supercritical CO2, the metal M of each salt being chosen from among the group of rare earths, yttrium, scandium, chromium, or a combination thereof. The invention also relates to the obtained filter and an associated method for the collection and quantitative analysis of nanoparticles.
A process for the impregnation of a filter comprising pores which are capable of retaining, within them, particles liable to be present in an air stream intended to pass through the filter, according to which the filter composed of a polymer membrane is impregnated with one or more organometallic salts by applying a treatment with supercritical CO2, the metal M of each salt being chosen from the group of the rare earth metals, yttrium, scandium, chromium or a combination of these.
Dependencies are inferred from the claim text.