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RECORD NUMBER: 136 OF 274

OLS Field Name OLS Field Data
Main Title Field Audit Results with Organic Gas Standards on Volatile Organic Ambient Air Samplers Equipped with Tenax GC (Gas Chromatography).
Author Crist, H. L. ; Mitchell, W. J. ;
CORP Author Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1986
Report Number EPA/600/J-86/279;
Stock Number PB87-167771
Additional Subjects Gas sampling ; Standards ; Auditing ; Concentration(Composition) ; Gas chromatography ; Chemical analysis ; Reprints ; Volatile organic compounds ; Air sampling
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB87-167771 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 5p
Abstract
The results from two field audits of Tenax-equipped sampling systems measuring the volatile organic (VOC) concentrations in ambient air are reported. The audited samplers collected the VOC's on Tenax GC (a solid adsorbent) with the VOC's later thermally desorbed and then analyzed by gas chromatography/mass spectrometry/computer (GC/MS/COMP). Each audit standard, prepared and certified by the National Bureau of Standards (NBS), contained at least four of the following compounds at the low parts per billion (ppb) level in dry N2: C6H6, C6H5CH3, C6H5Br, C6H5C1, CHC13, CC14 and C2C14. The results of the two audits were consistent and highlight some of the errors associated with sampling for VOC using Tenax GC. The agreement between successive sampling runs (repeatability) shows that the audit system itself is a viable means to audit the performance of VOC sampling systems at field sites.