Ion migration rate analysis device and analysis method applied

An analysis method for separating and identifying ionic analytes comprising:

• providing an ion source;
• providing two groups of parallel electrodes, wherein a drift region is formed between the two groups of parallel electrodes, the drift region has an ion entrance and an ion exit, and the ion entrance is connected to the ions source;
• wherein each group of the two groups of parallel electrodes is located in a plane respectively, the two planes are parallel to each other, and a gas flow exists in the drift region, the gas flow is a laminar flow;
• providing a power supply unit, which applies direct current voltage on the two groups of parallel electrodes to form a direct current electric field that applies an opposing force on ions against the gas flow, ions with different mobilities are trapped under the combined effect of the gas flow and the direct current electric field, wherein the power supply unit scans the direct current electric field to separate ions with different mobilities in the drift region;
• and the power supply unit adds radio frequency voltages on the parallel electrodes to confine ions in a direction perpendicular to the direction of the gas flow;
• and
• providing a detector connected to the ion exit to receive and detect ions.