Site Characterization and Containment Assessment with Dissolved Gases
Publication: Journal of Environmental Engineering
Volume 124, Issue 6
Abstract
A passive in situ headspace sampler has been developed for the collection of dissolved gases in ground water during tracer tests using dissolved, inert gases. The sampler is constructed of a semipermeable membrane and copper tubing equipped with a Schrader valve. Because the headspace in the sampler equilibrates with the dissolved gases in the ground water, no water is collected, which can be a great advantage in use at contaminated sites. The injection of the dissolved gases into the ground water is accomplished by diffusion through a semipermeable membrane. Oak Ridge National Laboratory routinely uses this technology for site characterization. The passive-diffusive technology also has potential as a low-cost, low-maintenance, and long-term method for containment assessment.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 124 • Issue 6 • June 1998
Pages: 572 - 574
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Jun 1, 1998
Published in print: Jun 1998
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