Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Near Real-Time GC Analysis of Volatile Organic Compounds Using an On-Line Micro-Trap.
Author Mitra, S. ; Lai, H. H. ; Jackson, M. ;
CORP Author New Jersey Inst. of Tech., Newark. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1993
Year Published 1993
Report Number EPA-R815734; EPA/600/A-93/125;
Stock Number PB93-204063
Additional Subjects Gas chromatography ; Volatility ; Organic compounds ; Real time operation ; Air pollution ; Traps ; Injection ; VOC(Volatile organic compound)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB93-204063 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/23/1993
Collation 7p
Micro-traps act as sample pre-concentrators for gas chromatography (GC) that can be used to make repetitive injections every few seconds. A thermal desorption micro-trap is made from a short segment of thin tubing containing an adsorbent or a chromatographic stationary phase. A carrier gas containing the analyte of interest can be introduced into the GC analytical column through the micro-trap which acts as a sample trap. Rapid heating of the micro-trap releases a 'concentration pulse' of the analyte that serves as a GC injection similar to that from an injection valve. Micro-traps can be used in various applications such as process stream analysis, fast and multi-input chromatography.