| Title: | Application of CSIA to distinguish between vapor intrusion and indoor sources of VOCs |
| Author(s): | McHugh T; Kuder T; Fiorenza S; Gorder K; Dettenmaier E; Philp P; |
| Address: | "GSI Environmental, Houston, Texas, USA. temchugh@gsi-net.com" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "At buildings with potential for vapor intrusion of volatile organic chemicals (VOCs) from the subsurface, the ability to accurately distinguish between vapor intrusion and indoor sources of VOCs is needed to support accurate and efficient vapor intrusion investigations. We have developed a method for application of compound-specific stable isotope analysis (CSIA) for this purpose that uses an adsorbent sampler to obtain sufficient sample mass from the air for analysis. Application of this method to five residences near Hill Air Force Base in Utah indicates that subsurface and indoor sources of tricholorethene and tetrachloroethene often exhibit distinct carbon and chlorine isotope ratios. The differences in isotope ratios between indoor and subsurface sources can be used to identify the source of these chemicals when they are present in indoor air" |
| Keywords: | "Air Pollution, Indoor/*analysis Carbon Isotopes/analysis Chlorine/analysis/chemistry Gas Chromatography-Mass Spectrometry Gases/*chemistry *Housing Tetrachloroethylene/analysis Trichloroethylene/analysis Utah Volatile Organic Compounds/*analysis;" |
| Notes: | "MedlineMcHugh, Thomas Kuder, Tomasz Fiorenza, Stephanie Gorder, Kyle Dettenmaier, Erik Philp, Paul eng Research Support, U.S. Gov't, Non-P.H.S. 2011/06/10 Environ Sci Technol. 2011 Jul 15; 45(14):5952-8. doi: 10.1021/es200988d. Epub 2011 Jun 21" |
