Summer 1997 Measurements and Methodologies

Primary Investigator Institutional Affiliation Measurements Methodology
Carroll University of Michigan NO, NO2 and NOy; 1,8 and 3 pptv detection limits respectively (continous 1 min. av. S/n=2) Chemiluminescence / photolysis / Au catalysis
O3, 5%, and CO, 10%, 1-5 min. UV photometer and gas filter correlation/IR absorption
UV radiation Eppley Radiometer
Bertman Western Michigan PAN compounds (PAN, PPN, MPAN, 15-30 min. resolution (intensives) and 1-2 hr. resolution (non-intensives); ~5 pptv detection limit GC-ECD; whole air injection
Claiborn Washington State Total peroxides and organic peroxides, deriving hydrogen peroxide continous, 5 or 10 min. averages, level of detection nominally 0.1 ppb, precision approximately 0.5 to 1.5% Dual channel enzyme fluorescence method
Fischer ERIM Aerosol and cloud backscatter, samples at 1 min., resolution 75 m., 30 min. averages of BL mixing height and aerosol extinction Lidar
Keeler University of Michgan HONO, HNO3, SO2, NH3, 12 or 24 hours Impactor / Denuder / HPLC
Particle elemental composition, 12 or 24 hours Filter / INAA / ICP-MS / SEM-EDX
Particle phase nitrate, sulfate, acidity, 12 or 24 hours Denuder / filter
Lamb and Westberg Washington State Isoprene canopy scale flux measurments, 30 min. resolution, ~once per hr., estimated uncertainty 20-30% Relaxed eddy accumulation sampling system
Samson University of Michigan Continuous measurements of wind speed, wind direction, temperature and humidity Anomometer, thermometer, thermocouple, hygrometer
Shepson Purdue Acetaldehyde, acetone, methyl glyoxal, biacetyl, CH3 CHO, C2H5CHO, MAR, MVK, isoprene, and - and -pinene GC/MS and fast-response MS/MS
H2CO Hantzch/fluorimetry
Young Ohio University C2-C10 alkanes, alkenes and alkynes, benzene, toluene, o-xylene, pm-xylene, ethyl benzene and methyl chloride Canisters/cartridges, GC-FID

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