How Should FAIMS Data Be Reported

3 TRENDS OF FAIMS SEPARATION PARAMETERS 3.3.1 How Should FAIMS Data Be Reported  

As described in 3.2.3, FAIMS separates ions by the compensation field Eq at a particular dispersion field and each ion/gas pair has a specific Pc( d) curve. In this section, we discuss how those curves depend on the ion and gas properties. A note on the nomenclature is due first. 

The FAIMS data were commonly reported in terms of voltages on electrodes creating Eq and Pq—the compensation voltage, CV, ( /c) and dispersion voltage, DV, (C/d)- For planar gaps, Eq and Pq are uniform and 

In curved geometries, Ec and E, vary across the gap (4.3.1) and, while Equation 

The best presentation of FAIMS data was vigorously debated in the community. There is a consensus to transition to E units from U prevalent in early work, but not on their merits versus the E/N option. We present the data in terms of Ec and Ec unless F or r is varied or when comparing to DT IMS where E/N units (Td) are historically standard. As FAIMS studies over a range of pressures and temperatures become common, E/N units would become most convenient despite the shortcomings noted above. With respect to curved FAIMS, we report Ec and Ec by Equation 

---