Rapid Determination of Ethylene Oxide and 75 VOCs in Ambient Air with Canister Sampling and Associated Growth Issues

A canister-based sampling method along with preconcentrator-Gas chromatography-Mass Spectrometry (GC-MS) analysis was applied to ethylene oxide (EtO or EO) and 75 other volatile organic compounds (VOCs) in ambient air. Ambient air can contain a large variety of VOCs, thorough requires non-discriminatory chromatographic capable resolving complex mixture. Canister collection whole samples allows for the wide range compounds, while simultaneous VOCs faster throughput than separate methods. The presented is based on US EPA Method TO-15A detection EtO from 18 2500 pptv. has an average accuracy 104% precision 13% relative standard deviation (RSD), instrument run time 32 min. In addition, link between canister cleanliness growth observed, potential mechanisms cleaning strategies are addressed.