Apiezon L-type grease coating of 8-µm Nuclepore Polycarbonate coarse filters used in GENT aerosol sampling units

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dc.contributor.authorStelcer, Een_AU
dc.contributor.authorNoorman, Jen_AU
dc.contributor.authorButton, Den_AU
dc.contributor.authorHawas, Oen_AU
dc.contributor.authorCohen, DDen_AU
dc.date.accessioned2007-11-22T04:06:16Zen_AU
dc.date.accessioned2010-04-30T04:42:53Zen_AU
dc.date.available2007-11-22T04:06:16Zen_AU
dc.date.available2010-04-30T04:42:53Zen_AU
dc.date.issued2006-04en_AU
dc.description.abstractCoarse stage Nuclepore filters used in GENT aerosol sampling units were coated with a thin film of Apiezon L-type grease in order to minimise the loss of particles on the filters due to 'bounce off'. Originally Freon was used as the solvent to dissolve the Apiezon grease in the coating process. Because of the environmental impact, Freon was discontinued and replaced with Fluorinert. Apiezon grease did not dissolve freely in the Fluorinert and it was replaced by Fomblin grease in 1995. This increased production costs and coated Nuclepore coarse filters ceased production in 2004. Users were concerned that their stocks of coated Nuclepore filters were diminishing and as no alternative supply was available the feasibility of coating the coarse filters in house needed to be investigated. This report describes experiments conducted at ANSTO and the results obtained during the investigation of the coating process under laboratory conditions. Apiezon grease and Toluene were used in this process. Experiments were based on the procedure proposed by Prof P. Hopke and Dr A. Markwitz [1] with modification to this technique to increase the uniformity of the grease layer across the filter surface and to achieve approximately 100 µg of Apiezon grease per filter.en_AU
dc.identifier.citationStelcer, E., Noorman, J., Button, D., Hawas, O., Cohen, D. D. (2006). Apiezon L-type grease coating of 8-μm Nuclepore Polycarbonate coarse filters used in GENT aerosol sampling units (ANSTO/E-760). Lucas Heights, N.S.W: Australian Nuclear Science and Technology Organisation, Institute for Environmental Research.en_AU
dc.identifier.govdoc953en_AU
dc.identifier.issn10307745en_AU
dc.identifier.otherANSTO-E-760en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/21en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectAerosolsen_AU
dc.subjectFiltersen_AU
dc.subjectSamplingen_AU
dc.subjectGreasesen_AU
dc.titleApiezon L-type grease coating of 8-µm Nuclepore Polycarbonate coarse filters used in GENT aerosol sampling unitsen_AU
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