Main Title |
2,4-Dinitrophenylhydrazine-Coated Silica Gel Cartridge Method for Determination of Formaldehyde in Air: Identification of an Ozone Interference. |
Author |
Arnts, R. R. ;
Tejada, S. B. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA/600/J-89/286; |
Stock Number |
PB90-196676 |
Additional Subjects |
Ozone ;
Chemical analysis ;
Formaldehyde ;
Silica gel ;
Liquid chromatography ;
Chemical reactions ;
Dinitrophenylhydrazine
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-196676 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
5p |
Abstract |
Two versions of the 2,4-dinitrophenylhydrazine method, a coated silica gel cartridge (solid) and acetonitrile impinger (solvent based), were used simultaneously to sample varied concentrations of ozone (0-770 ppb) and formaldehyde (20-140 ppb). Ozone was found to be a negative interference in the determination of formaldehyde by the 2,4-dinitrophenylhydrazine-coated silica gel cartridge method. At 120 ppb of ozone, formaldehyde at 40 ppb was under-reported by the cartridge method by 34% and at 300 ppb of ozone, formaldehyde measurements were 61% low. Greater losses were seen at higher ozone concentrations. Impinger sampling (2,4-DNPH in acetonitrile) showed no formaldehyde losses due to ozone. |
Supplementary Notes |
Pub. in Environmental Science Technology, v23 n11 1988. |
NTIS Title Notes |
Journal article. |
Category Codes |
68A; 99A; 99D |
NTIS Prices |
PC A01/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
013031756 |
Origin |
NTIS |
Type |
CAT |