Going Beyond the Requirements of US EPA Method TO-15: Innovative Cryogen-Free Ambient Air Monitoring of Trace-Level Air Toxics at High Humidity

This application note describes the GC–MS analysis of trace-level ‘air toxics’ in humidified canister air, using Markes’ ground-breaking cryogen-free Dry-Focus3 pre-concentration technology. It shows that this system is able to detect 65 target compounds ranging from propene to naphthalene, with method detection limits as low as 0.7 pptv in SIM mode, making it compliant both with standard TO-15 methods, and with ‘trace TO-15’ methods stipulating lower detection limits.