P2.03 - Bundled column GC-IMS – a miniaturized system for fast and sensitive on-site analytics

P9.5 - Compact, ultra-fast polarity switching ion mobility spectrometer with gas chromatographic pre-separation

“…The combination of acceleration by the electrical field and deceleration by collisions leads to a specific average drift velocity 𝑣𝑣 of each ion species. [2,5,6] The ion mobility 𝐾𝐾 can be described as a function of the charge number of the ion species 𝑧𝑧, the particle density of the neutral gas 𝑁𝑁, the Boltzman constant 𝑘𝑘 𝐵𝐵 , the absolute temperature 𝑇𝑇, the ion mass 𝑚𝑚, the mass of neutral gas molecules 𝑀𝑀 and the collision cross-section between the ions and the neutral gas molecules Ω as described in [2] and [7]:…”

Application of gas chromatography-ion mobility spectrometry in the analysis of food volatile components

“…However, when IMS analyzes complex compounds, there is a defect of competitive ionization between different components. This makes it difficult to distinguish components with similar ionic mobility, such as 3-methyl-1-butanol and 1-pentanol [8,9]. Later, people combined the high-efficiency separation of gas chromatography with the trace detection of IMS, and gave birth to the combined technology of GC and IMS, which effectively combined the retention time and the changes of ion mobility signal response, and superimposed the advantages of the two to achieve rapid, sensitive detection effect.…”