Main Title |
Evaluation of Silica Gel Cartridges Coated In situ with Acidified 2,4-Dinitrophenylhydrazine for Sampling Aldehydes and Ketones in Air. |
Author |
Tejada, S. B. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
Year Published |
1986 |
Report Number |
EPA/600/J-86/215; |
Stock Number |
PB87-169637 |
Additional Subjects |
Air pollution ;
Aldehydes ;
Ketones ;
Performance ;
Concentration(Composition) ;
Silica gel ;
Chemical analysis ;
Carbonyl compounds ;
Reprints ;
Air pollution sampling ;
Hydrazine/dinitrophenyl
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB87-169637 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
21p |
Abstract |
A procedure for coating in-situ silica in commercially available prepacked cartridges with 2,4-dinitrophenylhydrazine (DNPH) acidified with hydrochloric acid is described. The coated cartridge was compared with a validated DNPH impinger method for sampling organic carbonyl compounds (aldehydes and ketones) in diluted automotive exhaust emissions and in ambient air for subsequent analysis of the DNPH derivatives by high performance liquid chromatography. Qualitative and quantitative results show that the two sampling devices are equivalent. An unknown degradation product of acrolein has been tentatively identified as x-acrolein. The disappearance of acrolein in the analytical sample matrix correlated quantitatively almost on a mole for mole basis with the growth of x-acrolein. The sum of the concentration of acrolein and x-acrolein appears to be invariant with time. This sum could possibly be used as a more accurate value of the concentration of acrolein in the integratated sample. |
Supplementary Notes |
Pub. in International Jnl. of Environmental Analytical Chemistry, V26 p167-185 1986. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Evaluation of Silica Gel Cartridges Coated In situ with Acidified 2,4-Dinitrophenylhydrazine for Sampling Aldehydes and Ketones in Air. |
PUB Date Free Form |
1986 |
Category Codes |
68A; 99A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
716917888 |
Origin |
NTIS |
Type |
CAT |