Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Gas chromatographic method for quantitative determination of C2 to C13 hydrocarbons in roadway vehicle emissions /
Author Stump, Fred D., ; Stump, F. D. ; Dropkin, D. L.
Other Authors
Author Title of a Work
Dropkin, David,
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher Environmental Sciences Research Laboratory, U.S. Environmental Protection Agency,
Year Published 1985
Report Number EPA-600/J-85-254
Stock Number PB86-156882
OCLC Number 879374405
Subjects Automobiles--Motors--Exhaust gas--Measurement. ; Hydrocarbons--Measurement.
Additional Subjects Air pollution ; Exhaust emissions ; Concentration(Composition) ; Hydrocarbons ; Performance evaluation ; Reprints ;
Local Library Info
Library Local Subject Local Note
EKB Library copy has handwritten note: AIC Shelf.
Library Call Number Additional Info Location Last
EKBD  EPA-600/J-85-254 Research Triangle Park Library/RTP, NC 05/12/2014
NTIS  PB86-156882 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 38 unnumbered leaves : illustrations ; 28 cm
A gas chromatographic system was used to quantitate more than 300 gas-phase hydrocarbons from background and roadside ambient air samples. Samples were simultaneously collected in Tedlar bags and on Tenax cartridges. Hydrocarbons from Tedlar bag-collected samples were quantitated on a gas chromatograph arranged in a dual column configuration and equipped with a flame ionization detector. The C2 and C3 hydrocarbons were separated on a 5-m long stainless steel column packed with silica gel; C4 to C13 hydrocarbons were separated on a 125-m long glass capillary column containing 7.5% hydrophobic silica. A stainless steel hydrocarbon trap filled with untreated glass wool permitted the concentration of at least 4-L of sample at 70% relative humidity. This extends the detection limits for individual hydrocarbons to 15.0 parts per trillion carbon. A programmable valve controller maintained trap cooling during hydrocarbon concentration and thermally desorbed the hydrocarbons for gas chromatographic analysis.
Publication date from NTRL. Fifteen leaves of text followed by tables and charts. Includes bibliographical references.