Record Display for the EPA National Library Catalog


Main Title Analysis of Nitroaromatics in Diesel and Gasoline Car Emissions.
Author Tejada, S. B. ; Zweidinger, R. B. ; Sigsby, Jr, J. E. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-600/J-82-428;
Stock Number PB84-174549
Additional Subjects Air pollution ; Gasoline ; Exhaust emissions ; Gas analysis ; Nitro compounds ; Aromatic compounds ; Chemical analysis ; Fluorescence ; Particles ; Reprints ; Automobile exhaust ; Diesel engine exhaust ; Air pollution detection ; Pyrene/nitro ; High performance liquid chromatography
Library Call Number Additional Info Location Last
NTIS  PB84-174549 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
A routine on-line reverse phase high performance liquid chromatography (HPLC)/HPLC fluorescence method has been developed that greatly simplifies the analysis of selected nitroaromatic compounds in complex matrices. Sensitivity of the method is generally in the low picogram to low nanogram levels. The method is based on on-column catalytic reduction of the non-fluorescent nitroaromatic compounds to the corresponding highly fluorescent amine derivatives. Compound selectivity is achieved by chromatographic separation, use of selective wavelengths for fluorescence detection, and column switching techniques. The analytical system conveniently eliminates tedious sample clean-up. In most cases, only about 25 micrograms of the crude sample are needed per analysis. For 1-nitropyrene, a precision of + or - 3% at the one nanogram level is obtained routinely. Observed 1-nitropyrene levels typically varied from 15 to 120 ppm in the soluble organic fraction of diesel engine particulate emissions and from 4 to 90 ppm in the case of gasoline engine emissions.