Record Display for the EPA National Library Catalog


Main Title Direct Calibration of GC/MS Systems Using SRM (Standard Reference Material) Gas Cylinders.
Author Byrd, G. D. ; Richie, K. L. ; Sniegoski, L. T. ; White, E. ;
CORP Author National Bureau of Standards (NML), Gaithersburg, MD. Organic Analytical Research Div.;Environmental Monitoring Systems Lab., Research Triangle Park, NC. Quality Assurance Div.
Year Published 1985
Report Number EPA/600/4-85/062;
Stock Number PB86-110715
Additional Subjects Gas cylinders ; Organic compounds ; Volatility ; Cryogenics ; Calibration ; Standard reference materials
Library Call Number Additional Info Location Last
NTIS  PB86-110715 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 32p
A cryogenic trapping system has been developed for use in calibrating GC/MS systems for the analysis of volatile organic compounds. This system provides for direct Standard Reference Material (SRM) traceability on data generated on gaseous samples. The cryogenic trap is a coil of stainless steel tubing immersed in a cryogen to trap and preconcentrate organic species present in a gaseous sample. The trap also contains a heated injection port for the addition of isotopically labeled compounds for use in isotope dilution measurements. The first part of this research is concerned with the development of IDMS as an independent method for the quantification of analytes in gaseous samples to be used as standards. Results are presented for the determination of bromobenzene in nitrogen at nominal concentrations of 1 and 25 ppb. In the second part of the research, a calibration curve method was developed for using these standards in auditing the performance of GC/MS systems.