Characterization of a calibration source and gas chromatographic system for the measurement of ambient pan
Field measurements of peroxyacetyl (PAN) by GC with electron capture detection, requires a calibration method that is portable, stable with time, and accurate. The source used here consisted of a solution of PAN in tridecane which was contained within a capillary diffusion cell held at O/degree/C. A stable, low concentration of PAN in a gas stream was produced from this, and accurately calibrated by conversion to NO and analysis by O/sub 3/ chemiluminescene. The major impurities in this PAN source were methyl nitrate and HNO/sub 3/. Methyl nitrate arose from the unimolecular decomposition of PAN, and was observed to vary from 4% initially to almost 25% after a month. HNO/sub 3/ probably resulted from hydrolysis of PAN in the presence of H/sub 2/O impurities and varied from <1% to 17% after a month. An accuracy of +-25% was obtained at (PAN) = 1 ppbv and a detection limit of 0.01 ppbv was possibl; e with 5 cc samples. 8 refs., 1 fig.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 7126618
- Report Number(s):
- BNL-41188; CONF-880912-7; ON: DE88010522
- Country of Publication:
- United States
- Language:
- English
Similar Records
Contribution of organic nitrates to the total reactive nitrogen budget at a rural eastern U. S. site
Capillary gas chromatographic analysis of nitrogen dioxide and pans with luminol chemiluminescent detection.
Related Subjects
400102 -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
AIR POLLUTION MONITORING
AIR SAMPLERS
CALIBRATION
CHROMATOGRAPHY
EARTH ATMOSPHERE
ENVIRONMENTAL TRANSPORT
EQUIPMENT
ESTERS
EXPERIMENT PLANNING
GAS CHROMATOGRAPHY
MASS TRANSFER
MEASURING METHODS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
OPERATION
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PLANNING
PORTABLE EQUIPMENT
SAMPLERS
SEPARATION PROCESSES