Ion mobility analyzer and analysis method

An ion mobility analysis method for separating and identifying ionic analytes, comprising:

• providing an ion source for generating ions;
• providing a first drift/analyzer region provided with an ions entrance connected to the ion source, wherein the first drift/analyzer region comprises a first direct current electric field and a first gas flow, wherein the first direct current electric field and the first gas flow cause ions to move along an axis of the first drift/analyzer region, and wherein the first direct current electric field and the first gas flow apply opposing forces on ions;
• providing a second drift/analyzer region provided with an ions exit, wherein the second drift/analyzer region comprises a second direct current electric field and a second gas flow, wherein the second direct current electric field and the second gas flow cause ions to move along an axis of the second drift/analyzer region, wherein the second direct current electric field and the second gas flow apply opposing forces on ions, and the second gas flow has the same gas flow direction as the first gas flow;
• providing a connection region located between the first drift/analyzer region and the second drift/analyzer region, wherein the connection region comprises a third direct current electric field that causes ions to transfer from the first drift/analyzer region to the second drift/analyzer region;
• and
• providing a detector connected to the ion exit.