Use of Compound Specific Stable Isotope Analysis to Distinguish Between Vapor Intrusion and Indoor Sources of VOCs
Abstract
The objective of the present study is an empirical validation of selected adsorbents for preconcentration of TCE, PCE and benzene in air samples containing low concentrations of these VOCs. For validation of adsorbent tube performance, we sought to: 1) using reference data, select adsorbent-analyte pairings that would be likely to offer good quantitative recovery of the target VOCs; and 2) for those adsorbent-analyte pairings, evaluate sampling conditions that are representative of sampling indoor air and soil gas with respect to sample volume, humidity, mass of target VOC, mass of non-target VOCs, and holding time between sample collection and analysis; 3) investigate the recovery of target analytes mass and any associated isotope effects. The study results demonstrated fracrtionation-free performance for Carboxen 1016. These results allow precise isotope ratio analysis into vapor intrusion site assessment protocols and other applications where VOCs of interest are present at low ug/m3 concentrations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2012
- Accession Number
- ADA579119
Entities
People
- Monika Klisch
- R. P. Philp
- Thomas McHugh
- Tomasz Kuder
Organizations
- GSI Environmental (United States)