| 摘要 |
<p>Ion mobility spectrometer systems and methods of using such systems are disclosed. The systems and methods can combine two different ionization techniques (e.g., proton affinity ionization and electron transfer ionization) to provide enhanced detection sensitivity and/or detection selectivity of certain target compounds. A first ion mobility spectrometer (200) effects ionization by one mechanism and a second ion mobility spectrometer (300) effects ionization by the other mechanism. A comparison apparatus (400) analyzes the data from the two spectrometers (200, 300) to determine whether a target compound, e.g., a contraband compoumd, is present in the sample.</p> |
