Record Display for the EPA National Library Catalog

RECORD NUMBER: 74 OF 217

OLS Field Name OLS Field Data
Main Title Method to Measure Protective Clothing Permeation Under Intermittent Chemical Contact Conditions.
Author Goydan, R. ; Carroll, T. R. ; Schwope, A. D. ; Reid, R. C. ;
CORP Author Little (Arthur D.), Inc., Cambridge, MA. ;Massachusetts Inst. of Tech., Cambridge.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Feb 89
Year Published 1989
Report Number ADL-62290-65; EPA-68-03-3293; EPA/600/2-89/004;
Stock Number PB89-161509
Additional Subjects Protective clothing ; Chemical compounds ; Permeability ; Performance tests ; Mathematical models ; Comparison ; Experimental design ; Synthetic elastomers ; Acrylonitrile copolymers ; Diene resins ; Natural rubber ; Tetrachloroethylene ; Diffusion ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB89-161509 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/24/1989
Collation 120p
Abstract
A preliminary method was developed to measure chemical permeation under intermittent chemical contact conditions. Protective clothing permeation is presently measured using ASTM Method F739-85. Because this test measures permeation when the clothing material is in continuous contact with the chemical during the test, the results may overestimate the permeation resulting from intermittent chemical contacts. Tests were conducted using nitrile rubber/acetone, natural rubber/tetrachloroethylene, and various t(sub on)/t(sub cycle) ratios. The results indicate that lower levels of chemical permeation would be measured using the proposed method than those using ASTM F739. The measured breakthrough times were comparable but the permeation rates were greatly reduced. Although only a limited number of experiments was performed the method appears to generate reproducible results which agree fairly well with mathematical model predictions derived from Fick's laws of diffusion.