Record Display for the EPA National Library Catalog


Main Title Supercritical fluid chromatography for high molecular weight organic analysis /
Author Wright, Bob W.
Other Authors
Author Title of a Work
Udseth, H. R.
Smith, Richard D.
Publisher U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Year Published 1986
Report Number EPA/600-S2-86-092
OCLC Number 16083339
Subjects Chromatographic analysis--Environmental aspects--United States
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-S2-86-092 In Binder Headquarters Library/Washington,DC 11/06/2018
ELBD ARCHIVE EPA 600-S2-86-092 In Binder Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
Collation 2 unnumbered pages ; 28 cm
Caption title. At head of title: Project summary. Distributed to depository libraries in microfiche. "Dec. 1986." "EPA/600-S2-86-092."
Contents Notes
"This report describes a preliminary application of supercritical fluid mass spectrometry (MS) techniques developed at Battelle-Northwest to the analysis of a middle distillate fuel, an emission particulate extract, and the emission particulates themselves. These techniques include capillary column supercritical fluid chromatography (SFC) (alone) and coupled with MS, direct fluid injection (DFD/MS, and supercritical fluid extraction (SFE)/MS. These techniques are still in an early stage of development, but have demonstrated considerable potential for difficult analytical problems. The present work demonstrates the feasibility of achieving high resolution separations of complex mixtures with SFC using nonpolar CO2 as the mobile phase. Additionally, these analyses have provided an evaluation of the limitations of the present detector interfaces, resulted in further design improvements, and emphasized research areas for further investigation. The present work also demonstrates that SFC/MS application to complex mixtures can provide good separations and usable mass spectra. DFI/MS using supercritical ammonia was used to provide an efficient method of transporting sample components to the ionization source to obtain accurate molecular weight distribution data and structural information for rapid analysis of materials for which suitable separations have not yet been developed. Finally, high molecular species up to mass 1400 amu were detected during SFE/MS of the emission particulates using supercritical ammonia. The necessary research required to elevate the various supercritical fluid methods to routine application is summarized."