Harmonizing environmental methodologies for air toxics, ozone precursors and polar compounds using one cryogen-free TD-GC-FID/MS

摘要

In summary, we have shown that the CIA Advantage—UNITY-xr preconcentration system with Dry-Focus3 technology allows simultaneous, cryogen-free analysis of PAMS ozone precursors, TO-15 air toxics and OVOCs listed in the Chinese Environmental Air Volatile Organic Compound Monitoring Program (EA-VOC-MP). The dual-column/Deans switch GC- MS/FID strategy employed here provides confident identification and quantitation, with maximum sensitivity achieved in this challenging application by using the optimum detector for the various compound types.