amon bodies and travel blanks
DESCRIPTION
AMoN Bodies and Travel Blanks. Portland, Oregon April 2012. Cleaning Radiello Bodies. X. 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) - PowerPoint PPT PresentationTRANSCRIPT
AMoN Bodies and Travel Blanks
Portland, OregonApril 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
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Ammonium in bodies soaked for 24 hours placed in hood to dry 48 hours
Freezer Glass jars Box Storage Glass jars Hood Montoring
Amm
oniu
m (m
g/L)
Hood 1 Month
2 weeks
2 weeks
Month
762 241,359 308
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 Body White Body
SEM: 8,000x magnification
Blue Body White Body
Mercury Intrusion Porosimetry ResultsPorosity (%)
Test ACY SB AAA1 48.64 47.65 48.002 51.47 51.23 51.293 56.94 54.05 48.774 52.03 50.95 50.00
Mean 52.27 50.97 49.52
Mercury Intrusion Porosimetry ResultsMedian Pore Diameter (μm)
Test ACY SB AAA1 43.68 35.72 38.822 41.74 38.14 43.233 46.76 41.42 41.634 37.00 35.83 38.99
Mean 42.30 37.78 40.67