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MONITORING METHODS ADAPTABLE TO VAPOR INTRUSION MONITORING - USEPA COMPENDIUM METHODS TO-15, TO-15 SUPPLEMENT (DRAFT), AND TO-17
Citation:
McClenny, W A., K. D. Oliver, H. H. Jacumin Jr., AND E. H. Daughtrey Jr. MONITORING METHODS ADAPTABLE TO VAPOR INTRUSION MONITORING - USEPA COMPENDIUM METHODS TO-15, TO-15 SUPPLEMENT (DRAFT), AND TO-17. Presented at Specialty Conference and Exhibition on Indoor Air Quality Problems and Engineering Solutions, Durham, NC, July 21-23, 2003.
Impact/Purpose:
Develop innovative and customized new measurement approaches for air toxic VOCs as requested by methods development clients.
Description:
USEPA ambient air monitoring methods for volatile organic compounds (VOCs) using specially-prepared canisters and solid adsorbents are directly adaptable to monitoring for vapors in the indoor environment. The draft Method TO-15 Supplement, an extension of the USEPA Method TO-15, highlights the lowering of VOC detection limits to single digit parts-per-trillion by volume (pptv) concentrations using canister-based sampling along with analysis by benchtop GC/MS . Diffusive sampling onto adsorbent-filled sampling tubes similar to those described in TO-17 is being evaluated for sampling periods of 24 hours and less. Initial results indicate a linearity of response at the 2 parts-per-billion by volume (ppbv) level and excellent duplicate runs.
This presentation has been subjected to the Agency's peer and administrative review, and it has been approved for publication. Mention of trade names or commercial products does not constitute endorsement of recommendation for use.