Main Title |
Comparison of End-Tidal Breath CO (Carbon Monoxide) Estimates of COHb with Estimates Based on Exposure Profiles of Individuals in the Denver, Colorado and Washington, DC Area. |
Author |
Wallace, L. A. ;
Thomas, J. ;
Mage, D. T. ;
|
CORP Author |
Environmental Monitoring Systems Lab., Research Triangle Park, NC. Data Management and Analysis Div. ;General Software Corp., Landover, MD. |
Year Published |
1984 |
Report Number |
EPA-600-D-84-194; |
Stock Number |
PB84-229822 |
Additional Subjects |
Carbon monoxide ;
Toxicity ;
Air pollution ;
Public health ;
Field tests ;
Exposure ;
Hazardous materials ;
Denver ;
District of Columbia ;
Concentration(Composition) ;
Blood analysis ;
Comparison ;
Toxic substances ;
Coburn Forster Kane equation
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB84-229822 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
22p |
Abstract |
The U.S. Environmental Protection Agency has sponsored a field study of personal exposures to carbon monoxide (CO) in Washington, D.C., and Denver. CO concentrations in exhaled breath were measured in 837 nonsmoking adult residents of Washington and 454 nonsmoking adult residents of Denver between November 8, 1982, and February 25, 1983. The percent of people exceeding 10 ppm (about 2% COHb saturation) was 10% in Denver and 5% in Washington. Mean (+ or - S.E.) breath concentrations were 7.2 + or - 0.2 ppm in Denver and 5.1 + or - 0.2 ppm in Washington. These concentrations agreed well with a previous nationwide study of blood carboxyhemoglobin (NHANESII), but were higher than would be predicted from outdoor fixed stations. Comparisons of COHb estimated from breath measurements and COHb estimated by CO exposures and the Coburn-Forster-Kane (CFK) equation indicate a discrepancy, with the breath COHb tending towards higher estimates. Possible contributing factors to the discrepancy are uncertainties in published breath CO-blood COHb correlations, a tendency for the personal monitors to drift with time, and uncertainties in physiological function values used in the CFK equation. |
Supplementary Notes |
Prepared in cooperation with General Software Corp., Landover, MD. |
PUB Date Free Form |
Jul 84 |
Category Codes |
6T; 6E; 57Y; 68G; 68A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/08 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
431423006 |
Origin |
NTIS |
Type |
CAT |