Record Display for the EPA National Library Catalog


Main Title Gradient Liquid Chromatography/Mass Spectrometry Using Microbore Columns and a Moving Belt Interface.
Author Hayes, M. J. ; Schwartz, H. E. ; Vouros, P. ; Karger, B. L. ;
CORP Author Environmental Research Lab., Athens, GA. Office of Research and Development. ;Northeastern Univ., Boston, MA. Barnett Inst. of Chemical Analysis and Materials Science.
Publisher c1984
Year Published 1984
Report Number EPA/600/J-84/419;
Stock Number PB89-208896
Additional Subjects Mass spectroscopy ; Phenols ; Column packings ; Boring ; Interfaces ; Motion ; Qualitative analysis ; Belt conveyors ; Graphs(Charts) ; Reprints ; Liquid chromatography
Library Call Number Additional Info Location Last
NTIS  PB89-208896 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
High-performance gradient microbore LC/MS is demonstrated by use of spray deposition onto a moving belt surface. A simplified nebulizer design is shown to provide convenient operation and high transfer efficiency over a wide range of flow and solvent conditions. It is shown further that the extracolumn variance of the LC/MS system is sufficiently small to allow the use of relatively short 5 micrometers and 7.5 micrometers reversed-phase microbore columns without significant loss in resolution. Relatively high microbore flow rates (about 100 microL/min) are possible for fast analysis and sensitivity. The LC/MS technique is applied to the analysis of phenols in a aqueous coal gasification sample. Detection limits for full scan LC/EI-MS are found to be about 6 ng for some representative phenols. (Copyright (c) 1984 American Chemical Society.)