Patent ID: 8604422
Filing Date: 2013-12-10
Classification: G01N,H01J

Abstract:
1. A method for spectroscopy with charged analytes, comprising at least the following steps: introducing a gas sample comprising a gas mixture into a reaction space; carrying out an ionization process in the reaction space to create charged analytes by letting an ionization pulse I act for a time interval Δt subsequent carrying out of a transfer process by letting an ion extraction pulse F act for a time interval Δt drifting of the charged analytes in the drift space to a detector by means of a drift field present in the drift space and obtaining analyte signals from the analytes reaching the detector, wherein at least 3 measurements are performed and spectra recorded for one gas comprising analytes, wherein the spectra give the intensity of the analyte signals versus the drift time and for measurement to measurement the residence time in the reaction space Δt wherein the peaks of the analyte signals of the various measurements are compared and each time falling and rising peak heights of a particular drift time are ascertained with respect to the peaks of the measurement with smaller Δt