Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Ion Abundance Criteria for Gas Chromatographic/Mass Spectrometric Environmental Analysis.
Author Donnelly, J. R. ; Sovocool, G. W. ; Mitchum, R. K. ;
CORP Author Lockheed-EMSCO, Las Vegas, NV.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Year Published 1988
Report Number EPA-68-03-3249; EPA/600/J-88/055;
Stock Number PB88-250790
Additional Subjects Environmental tests ; Calibrating ; Standards ; Gas chromatography ; Mass spectroscopy ; Accuracy ; Quality assurance ; Quantitative analysis ; Reproducibility ; Phosphines ; Chemical analysis ; Reprints ; Ion abundance ; Decafluorotriphenyl phosphine
Library Call Number Additional Info Location Last
NTIS  PB88-250790 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/29/1988
Collation 8p
Mass and intensity calibration of gas chromatograph/mass spectrometer (GC/MS) responses is an important quality assurance issue for chemical analysis. Ion abundance calibration with decafluorotriphenylphosphine (DFTPP) was applied in 1975 to standardize quadrupole spectra to resemble the ion abundances that were obtainable from magnetic sector mass spectrometers. Modern quadrupole mass spectrometers provide significantly greater high-mass sensitivity than allowed under the 1975 study. Thus, those recommendations were reevaluated with two approaches. First, an interlaboratory study was conducted using 15 different gas chromatography/mass spectrometry (GC/MS) systems. Second, the U.S. Environmental Protection Agency Contract Laboratory Program (EPA-CLP) quality assurance data base was searched and over 6500 DFTPP tune results were plotted and evaluated. Based on these approaches, updated ion abundance criteria recommendations have been developed, which contemporary instruments can meet, and which meet data quality objectives regarding identification and quantitative analysis of analytes.