Although permeation and sorption of organic
solvents in polyvinyl chloride (PVC) pipe materials
have been studied, no research has sufficiently
documented pipe susceptibility to permeation in
the contaminated subsurface environment. This
study investigated the permeation of organic contaminants
through PVC pipe via the vapor and
aqueous phases.
The authors used pipe-bottle tests, gravimetric
sorption tests, and microscopic visualization
tests to study the permeation of benzene, toluene,
and trichloroethylene through 1-in. PVC
pipe from vapor and aqueous phases. Test results
show that PVC pipe materials are an effective
barrier against the permeation of benzene, toluene,
ethylbenzene, and xylenes in either gasoline-saturated
vapors or gasoline-saturated groundwater
at typical contaminated sites.
These findings provide a basis for predicting
the threshold contamination level at which
PVC pipes would be susceptible to permeation
if exposed to the vapors or aqueous solutions
of organic compounds. Utilities and regulators
can use this information to make decisions
about replacing their PVC pipes in contaminated
areas. Includes 15 references, figures.
| Edition : | Vol. 101 - No. 5 |
| File Size : | 1
file
, 690 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 05/01/2009 |
