Accession Number : ADA582252
Title : Application of Advanced Sensor Technology to DoD Soil Vapor Intrusion Problems
Descriptive Note : Cost and performance rept.
Corporate Author : ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM OFFICE (DOD) ARLINGTON VA
Report Date : Oct 2012
Pagination or Media Count : 46
Abstract : Vapor intrusion (VI) of groundwater contaminants like trichloroethylene (TCE) has become an issue of increasing concern over the past decade necessitating development of methods to appropriately evaluate it. Determination of TCE concentrations in indoor air can be a crucial part of VI assessments. The conventional and most commonly used U.S. Environmental Protection Agency (USEPA) Toxic Organics-15 (TO-15) (gas chromatography/mass spectrometry [GC/MS]) method is limited primarily by protracted turnaround times, multiple house visits, and per-sample cost. Near-real-time on-site analysis can address these concerns and identify potential interfering indoor sources as well. A commercially available portable GC/MS provides a near-real time analysis, but has high capital costs, requires external carrier gas, and can have significant instrument downtime for costly maintenance. The overall project objective was to evaluate the efficacy of a micro-gas chromatograph ( GC) prototype for detection of low-level TCE concentrations in indoor-air VI applications as a potential cost-effective alternative.
Descriptors : *VAPORS , CONTAMINANTS , DETECTORS , INTRUSION , SOILS , TRICHLOROETHYLENE
Subject Categories : Physical Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE