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Title: Decontaminating materials used in ground water sampling devices: Organic contaminants

In these studies, the efficiency of various decontamination protocols was tested on small pieces of materials commonly used in ground water sampling devices. Three materials, which ranged in ability to sorb organic solutes, were tested: stainless steel (SS), rigid polyvinyl chloride (PVC), and polytetrafluoroethylene (PTFE). The test pieces were exposed to two aqueous test solutions: One contained three volatile organic compounds (VOCs) and one nitroaromatic compound, and the other contained four pesticides. Also, three types of polymetic tubing were exposed to pesticide solutions. Generally, the contact times were 10 minutes and 24 hours for sorption and desorption. The contaminants were removed from the nonpermeable SS and the less-sorptive rigid PVC test pieces simply by washing with a hot detergent solution and rinsing with hot water. Additional treatment was required for the PTFE test pieces exposed to the VOCs and for the low-density polyethylene (LDPE) tubing exposed to the pesticide test solution. Solvent rinsing did not improve removal of the three VOCs form the PTFE and only marginally improved removal of the residual pesticides from the LDPE. However, a hot water and detergent wash and rinse followed by oven drying at approximately 105 C was effective for removing the VOCs frommore » the PTFE and substantially reduced pesticide contamination from the LDPE.« less
Authors:
;
Publication Date:
OSTI Identifier:
20080494
Resource Type:
Journal Article
Resource Relation:
Journal Name: Ground Water Monitoring and Remediation; Journal Volume: 20; Journal Issue: 1; Other Information: PBD: Win 2000
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; WATER POLLUTION; GROUND WATER; SAMPLERS; PERFORMANCE TESTING; ORGANIC COMPOUNDS; NITRO COMPOUNDS; PVC; STAINLESS STEELS; SORPTION; REMEDIAL ACTION