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Analysis of Gaseous Compounds Using Differential Mobility Spectrometry and Field Asymetric Waveform Ion Mobility Spectrometry
Autoři: Pavlačka Martin | Bajerová Petra | Ventura Karel
Rok: 2015
Druh publikace: ostatní - článek ve sborníku
Název zdroje: YISAC 2015: 22nd Young Investigators Seminar on Analytical Chemistry
Název nakladatele: University of Łódź
Místo vydání: Łódź
Strana od-do: 46
Tituly:
Jazyk Název Abstrakt Klíčová slova
eng Analysis of Gaseous Compounds Using Differential Mobility Spectrometry and Field Asymetric Waveform Ion Mobility Spectrometry Knowing the detailed chemical composition of gases is vital in many situations in life, screening passengers and their baggage for drugs and explosives at the airport, detecting chemical warfare agents or monitoring pollutants in the air. Ion mobility spectrometry (IMS) is a device that can handle online analysis of these gaseous compounds. The main benefits of this technique are low detection limit for explosives and narcotics, fast response, simplicity and portability. IMS is an analytical technique for distinguishing ions in gaseous phase according to differences in the speed that they migrate through a buffer gas under an influence of electric field. Typically, IMS system operates under low field conditions (less than 1 kV/cm). Drift tube ion mobility spectrometry (DTIMS) and traveling wave ion mobility spectrometry (TWIMS) operates in low field regime. The mainly used miniaturised versions working at high electric field (more than 10 kV/cm) are field asymmetric waveform ion mobility spectrometry (FAIMS) and differential mobility spectrometry (DMS). The most problematic part of DMS/FAIMS instruments is ionisation region, where samples are ionised. The most common ionisation source in FAIMS or DMS is 63Ni. The health risks and problem with legislature of radioactive compounds have led many researches to investigate other ionisation technique. Photoionization and corona discharge as alternatives sources in FAIMS and DMS were used in this research. Ion Mobility Spectrometry; Gaseous Compounds; FAIMS; DMS

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