AMoN Bodies and Travel Blanks Portland, Oregon April 2012

Cleaning Radiello Bodies Single wash with DI water and sonication Triple wash with DI water and sonication Above, followed by vacuum desiccator (7 days) - filter paper (with citric acid) - radiello core (with phosphoric acid) X X X

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Scanning Electron Microscopy Three bodies tested – New blue sampler body – Used, unwashed blue sampler body – Used white sampler body All sampler bodies ~uniform in appearance No visual difference between used blue sampler bodies and new blue sampler bodies Visual differences between blue sampler bodies and white sampler bodies

White BodyBlue Body SEM: 100x magnification, interior wall

SEM: 500x magnification Blue BodyWhite Body

SEM: 8,000x magnification Blue BodyWhite Body

Mercury Intrusion Porosimetry Results Porosity (%) Test ACYSBAAA Mean

Mercury Intrusion Porosimetry Results Median Pore Diameter ( μm) Test ACYSBAAA Mean