| Main Title |
Measurement of the Biotransfer and Time Constant of Radon from Ingested Water by Human Breath Analysis. |
| Author |
Brown, W. L. ;
Hess, C. T. ;
|
| CORP Author |
Maine Univ. at Orono. Dept. of Physics and Astronomy.;Environmental Protection Agency, Cincinnati, OH. |
| Publisher |
c1992 |
| Year Published |
1992 |
| Report Number |
EPA-R-815156; EPA/600/J-92/196; |
| Stock Number |
PB92-189026 |
| Additional Subjects |
Radon 222 ;
Breath tests ;
Scintillation counting ;
Pharmacokinetics ;
Dosimetry ;
Potable water ;
Questionnaires ;
Stomach ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-189026 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
Forty-one tests were performed on 38 volunteers to measure elimination rates of (222)Rn in expired breath. Participants ranged from ages 9 to 85 y, with 16 males and 22 females. The levels of physical activity of the subjects ranged from very inactive to marathon level. Calibration of the flow-through scintillation cell was accomplished using a medical ventilator and (222)Rn reservoir for 5-15 L/min flow rates. The authors found a wide range of percent elimination (12-68%) in 30 min. The percent elimination has a mild correlation with the predicted forced expiratory volume in 1 s and with time passed since eating. Their observations of bio-retention half-times range from 17-400 min. The whole-body dose calculations yield a mean of 2.70 + or - 3.43 nGy/Bq, and the stomach dose calculations yield a mean of 276 + or - 186 nGy/Bq. These means range beyond those previously reported. (Copyright (c) 1992 Health Physics Society.) |
| Supplementary Notes |
Pub. in Health Physics, v62 n2 p162-170 Feb 92. Sponsored by Environmental Protection Agency, Cincinnati, OH. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Measurement of the Biotransfer and Time Constant of Radon from Ingested Water by Human Breath Analysis. |
| Category Codes |
57V; 57Q |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/19 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
220521576 |
| Origin |
NTIS |
| Type |
CAT |
