Conservation of the Charge in Signal from Drift Tube Ion Mobility Spectrometers.

ABSTRACT: Quantitative information obtained from drift tube detectors used in ion mobility spectrometry is contained in the area of peaks forming the drift time spectrum. The area of all peaks corresponds to the total charge of ions entering the drift section of the spectrometer. It was found that this charge is not conserved when the ion composition changes. This work is devoted to studying the causes of this phenomenon. Experimental research consisted of recording drift time spectra for 2-pentanone and n-heptanone, at various analyte concentrations and different opening times of the shutter grid. Measurements of the total ion current were also performed in static mode with an open grid. The research results indicated that the reasons for the lack of ion charge conservation in the drift time

SUBMITTER: Wolanska I 

PROVIDER: S-EPMC11525926 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature