AI Article Synopsis
- - A new surface ionization (SI) source has been developed for ion mobility spectrometers (IMS) that serves as both an ion emitter and an injector, allowing for more efficient ion injection into the system.
- - This dual-function design enables a reduction in the size of the drift tube and simplifies the high voltage circuitry needed for operation.
- - The SI source shows a response range of about 4 orders of magnitude with good reproducibility for tri-ethylamine, and it offers advantages over radioactive ionization, including faster ion injection and a stable baseline in the ion mobility spectrum.
Article Abstract
A surface ionization (SI) source is designed and prepared for ion mobility spectrometer (IMS). The source acts not only as an emitter but also an ion injector which can inject ions periodically into the drift region of drift tube. Using the dual-role source, the dimension of the drift tube can be decreased and the circuit for high voltage can be simplified efficiently. The IMS with the SI source has a response range of approximately 4 orders of magnitude and a good reproducibility to tri-ethylamine. Compared with radioactive ionization (RI), the ultra-short time for ion injection and the zero level base line of ion mobility spectrum are characteristics of the surface ionization.
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| http://dx.doi.org/10.1016/j.aca.2007.01.027 | DOI Listing |
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