Presentation Profile
Robust, Sensitive Cavity Ringdown Spectroscopy Detection of Trace Ethylene Oxide
Currently Scheduled: 10/15/2024 - 8:20 AM - 8:40 AM
Room: Bluebonnet
Main Author
James Hodges - Process Insights
- Yu Chen - Process Insights
- Brian Siller - Process Insights
Abstract:
This April 2024, US EPA announced NESHAP rules regarding ethylene oxide (EtO), requiring substantial reductions in the emission of EtO. Therefore, facilities need more sensitive solutions for emission monitoring (<< 1 ppm EtO). To address the new requirements, we developed a commercial ambient air analyzer for EtO based on Cavity Ring-Down Spectroscopy (CRDS). CRDS is the most sensitive optical approach for real-time emissions monitoring. We achieve a detection limit of 1 ppb via a simple field-proven design with a history of robustness. Ultimately, our analyzer is insensitive to interfering species and represents a robust, cost-effective approach to measure trace EtO.
