Detection of analytes using ion mobility spectrometry

摘要: Methods and systems are provided for detecting analytes in a gas phase sample. An ion mobility spectrometer is having an excess amount of dopant its separation region. In embodiment, the added directly to region, such as with drift or by diffusion, thereby providing that dominates subsequent cluster formation maintenance. Excess region minimizes reduces interfering signals associated unwanted substances, water vapor, introduced IMS. aspect, invention provides IMS methods increased sensitivity reliability analyte detection.