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Title: Development of Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL in the Subsurface

Abstract

Naturally occurring 222-radon in ground water can potentially be used as an in situ partitioning tracer to characterize dense nonaqueous phase liquid (DNAPL) saturations. The static method involves comparing radon concentrations in water samples from DNAPL-contaminated and non-contaminated portions of an aquifer. During a push-pull test, a known volume of test solution (radon-free water containing a conservation tracer) is first injected (''pushed'') into a well; flow is then reversed and the test solution/groundwater mixture is extracted (''pulled'') from the same well. In the presence of NAPL radon transport is retarded relative to the conservative tracer. Assuming linear equilibrium partitioning, retardation factors for radon can be used to estimate NAPL saturations.The utility of this methodology was evaluated in laboratory and field settings.

Authors:
; ;
Publication Date:
Research Org.:
Oregon State University/Dept of Chemical Engineering (US)
Sponsoring Org.:
(US)
OSTI Identifier:
809809
Report Number(s):
DOE/ER/62523
Project no. 60158; TRN: US0302596
DOE Contract Number:  
FG07-97ER62523
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 27 Feb 2003
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; MONITORING; RADON 222; ENVIRONMENTAL TRANSPORT; TRACER TECHNIQUES; REMEDIAL ACTION; ORGANIC COMPOUNDS; AQUIFERS

Citation Formats

Brian M. Davis, Lewis Semprini, and Jonathan Istok. Development of Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL in the Subsurface. United States: N. p., 2003. Web. doi:10.2172/809809.
Brian M. Davis, Lewis Semprini, & Jonathan Istok. Development of Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL in the Subsurface. United States. doi:10.2172/809809.
Brian M. Davis, Lewis Semprini, and Jonathan Istok. Thu . "Development of Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL in the Subsurface". United States. doi:10.2172/809809. https://www.osti.gov/servlets/purl/809809.
@article{osti_809809,
title = {Development of Radon-222 as Natural Tracer for Monitoring the Remediation of NAPL in the Subsurface},
author = {Brian M. Davis and Lewis Semprini and Jonathan Istok},
abstractNote = {Naturally occurring 222-radon in ground water can potentially be used as an in situ partitioning tracer to characterize dense nonaqueous phase liquid (DNAPL) saturations. The static method involves comparing radon concentrations in water samples from DNAPL-contaminated and non-contaminated portions of an aquifer. During a push-pull test, a known volume of test solution (radon-free water containing a conservation tracer) is first injected (''pushed'') into a well; flow is then reversed and the test solution/groundwater mixture is extracted (''pulled'') from the same well. In the presence of NAPL radon transport is retarded relative to the conservative tracer. Assuming linear equilibrium partitioning, retardation factors for radon can be used to estimate NAPL saturations.The utility of this methodology was evaluated in laboratory and field settings.},
doi = {10.2172/809809},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {2}
}