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A Real-Time VOC Sensor for Vapor Intrusion Investigations

Initial Development and Next Research Steps

Robert Truesdale, Li Han, Chris Lutes

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Basic Concept and Initial PrototypesOperates on the principle of conductivity changes of composite polymer nanofibers when exposed to sub-ppmv levels of VOCs

Can be tuned to target VOC classes by selecting polymers with appropriate moieties

Wearable – networkable . . . . Compound specific?

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VOC Sensor – Performance and next steps

Performance to date:

1. Proof of concept – detection of TCE and PCE at sub-ppbv levels

2. Rapid response – minutes.

Next steps:

1. Develop improved prototypes: PMMA, PU+CNTs

2. Field test against Summas, passive samplers.