Design of Round-Nozzle Inertial Impactors Review with Updated Design Parameters

Round-nozzle inertial impactors are widely used aerosol measuring instruments to characterize the mass and chemical composition of airborne particles as a function particle aerodynamic diameter. This article summarizes most important design considerations with updated recommended parameters taken from our review published research articles, discusses some more common non-idealities seen in operation performance impactors. With this information, it is now possible cascade impactor near-ideal separation performance, stage cutpoints that can be predicted excellent accuracy, verified experimentally using state-of-the-art calibration techniques.