Record Display for the EPA National Library Catalog

RECORD NUMBER: 37 OF 2380

OLS Field Name OLS Field Data
Main Title A comparative evaluation of GC/MS data analysis processing /
Author Pellizzari, Edo D. ; Hartwell, T. ; Crowder, J.
Other Authors
Author Title of a Work
Hartwell, T. D.
Crowder, J.
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory,
Year Published 1984
Report Number EPA/600/3-84/105; EPA-68-02-3235
Stock Number PB85-125664
OCLC Number 48381394
Subjects Air--Pollution--United States--Measurement. ; Air--Pollution--Measurement.
Additional Subjects Environmental surveys ; Hazardous materials ; Gas analysis ; Information systems ; Air pollution ; Gas chromatography ; Mass spectroscopy ; Organic compounds ; Comparison ; Tables(Data) ; Concentration(Composition) ; Chemical analysis ; Air pollution detection ; Computer applications
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-125664 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 168 pages ; 28 cm
Abstract
Mass spectra obtained by fused silica capillary gas chromatography/mass spectrometry/data system (GC/MS/DS) analysis of mixtures of organic chemicals adsorbed on Tenax GC cartridges was subjected to manual and automated interpretative techniques. Synthetic mixtures (85 chemicals representing 15 chemical classes) were prepared to simulate the following design effects: (1) the occurrence of similar or dissimilar overlapping mass spectra from two or more constituents present in unresolved gas chromatographic peaks; (2) the occurrence of similar and dissimilar proportions (concentrations) of unresolved components in gas chromatographic peaks; and (3) the presence of different chemical classes in a mixture. Environmental samples from seven different geographical areas in the Continental U.S. were collected and analyzed. Using synthetic mixtures the interpretative methods evaluated for accuracy were: (1) manual (skilled interpretor); (2) Incos data software; (3) Mass Spectra Fourier Transformed/Search software; and (4) an RTI Mass Spectral Search System. A Rindfleisch deconvolution program was also applied to raw data prior to using the automated procedures. Only manual, Incos, and the RTI system were evaluated with environmental samples. The deconvolution program was also part of this evaluation.
Notes
Caption title. "November 1984." "EPA-600/3-84-105." Microfiche.