Photograph of the custom-built paper spray ionization ion mobility spectrometer.
Geometrically-simplified simulation model of the IMS with its components and coordinates labeled.
A contour plot of the potential V.
An arrow surface plot of the velocity field.
Positive ion mobility spectrum of 2, 6-DtBP via paper spray ionization.
Plot of the resolving power and drift time versus the drift gas flow rate for the custom-built instrument. Conditions: 5500 V drift voltage, 8500 V paper tip voltage, 25 °C, and 200 μs ion gate pulse.
Ion mobility spectrum of 2, 6-DtBP as a function of gate pulse width. (a) Comparison of the spectrum with different gate pulse widths. (b) Plot of the resolving power versus the gate pulse width. Conditions: 5500 V drift voltage, 8500 V paper tip voltage, 25 °C, and 0.8 L/min N2 drift gas.
Plot of the drift time and resolving power versus the temperature for 2, 6-DtBP in the positive mode. The results indicate that the performance could be improved if the experiments are performed at room temperature.
Typical experimental parameters.
Analytical parameters for the determination of 2, 6-DtBP using PSIMS.
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