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.
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Other Authors |
|
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. |
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Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EKBD |
EPA-600/J-85-254 |
|
Research Triangle Park Library/RTP, NC |
05/12/2014 |
NTIS |
PB86-156882 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
38 unnumbered leaves : illustrations ; 28 cm |
Abstract |
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. |
Notes |
Publication date from NTRL. Fifteen leaves of text followed by tables and charts. Includes bibliographical references. |