Managing Ethylene Oxide Growth in Canisters – Oxidative Cleaning and Water Vapor ManagementAir Monitoring, Methods, and Technology
Oral Presentation
Prepared by J. Hoisington, J. Herrington
Restek Corporation, 110 Benner Circle, Bellefonte, PA, 16823, United States
Contact Information: [email protected]; 1-814-353-1300
ABSTRACT
Ethylene Oxide (EtO) analysis using air canister sampling is complicated due to the growth of EtO that can occur over time, leading to false positive and high biases. Previous work has shown that this growth is linked to contamination of larger, semi-volatile compounds in canisters when the canisters are filled with humid air. This meant that labs would often see good results in dry lab blanks but have issues with older or dirty canisters in the field.
In this presentation we’ll show a novel oxidative canister cleaning technique that can reduce canister contamination and EtO growth. Additionally, we’ll investigate a de-humidification technique during sampling as a potential technique to address EtO growth
