Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 4

OLS Field Name OLS Field Data
Main Title Recent Advances in Measuring Exhaled Breath and Estimating Exposure and Body Burden for Volatile Organic Compounds (VOCS).
Author Wallace, L. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 10 Feb 93
Year Published 1993
Report Number EPA-68-02-3679 ;EPA-68-02-4544; EPA/600/A-93/142;
Stock Number PB93-212314
Additional Subjects Body burden ; Volatile organic compounds ; Breath tests ; Portable equipment ; Reproducibility of results ; Test methods ; Pharmacokinetics ; Tissue distribution ; Monitors ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB93-212314 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/22/1993
Collation 24p
Abstract
An improved portable breath measurement method has been developed that allows one-minute sampling times. The equipment has been successfully tested in field and chamber studies. Results of these studies suggest that breath levels following known exposures are predictable and reproducible across a small number of volunteers. The residence times in the body and the distribution in body compartments of several common air toxics have been determined. A simple four-compartment linear model is capable of fitting the observed data. The main parameters of the model include the fraction f of the parent compound exhaled under steady-state conditions and the residence times tau(sub i) in the ith compartment. The values of these parameters for several volatile organic compounds (VOCs) and for the four body compartments (blood, vessel-rich tissues, vessel-poor tissues, and fat) are provided.