Main Title |
Halocarbon Interferences in Chemiluminescent Measurements of NOx. |
Author |
Joshi, Surendra B. ;
Bufalini, Joseph J. ;
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. |
Year Published |
1978 |
Report Number |
EPA/600/J-78/034; |
Stock Number |
PB-287 567 |
Additional Subjects |
Nitrogen oxides ;
Gas analysis ;
Monitors ;
Chemiluminescence ;
Performance evaluation ;
Halogen organic compounds ;
Air pollution ;
Chemical analysis ;
Air pollution detection ;
Reprints
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-287 567 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
5p |
Abstract |
Anomalous NOx responses were observed when halocarbons were irradiated in the presence of oxides of nitrogen. Interferences to chemiluminescent NOx monitor using heated carbon converter were studied for phosgene, tri-chloroacetyl chloride, chloroform, chlorine, and hydrochloric acid. Data show positive interferences in the NOx monitor due to the test compound, either individually or as mixtures. Substituting an FeSO4 converter for the heated carbon converter may solve the problem. This information may be of particular interest to smog chamber researchers and to those making NO2 measurements in areas where halocarbon levels are relatively high. It is speculated that excited O2 molecules may be the interfering compound, but additional work is needed to substantiate this hypothesis. |
Supplementary Notes |
Pub. in Environmental Science and Technology, v12, n5, p597-599, May 1978. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Halocarbon Interferences in Chemiluminescent Measurements of NOx. |
PUB Date Free Form |
May 78 |
Category Codes |
14B; 68A; 99A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
323751089 |
Origin |
NTIS |
Type |
CAT |