Characterization of Field Asymmetric Ion Mobility Spectrometry Response to Binary Gas Mixture

Abstract

Characterization of Field Asymmetric Ion Mobility Spectrometry (FAIMS) was studied with two experiments. First, acetone and diethyl ether were used to examine the relationship between concentration and ion current. The results show FAIMS has a nonlinear dependency on gas concentration. Then, binary mixture gases made up of acetone, and diethyl ether was measured. The result shows FAIMS has a nonlinear characteristic for gas mixture analysis because the output of binary mixture gas was not equal to the summation of the outputs obtained from single gases. Moreover, it is an interesting phenomenon that one gas (diethyl ether) suppressed the response to other gas (acetone).