Patent ID: 6854460

Claim:
A system for delivery and deposition of aerosolized masses, comprising: an aerosol generator; an upstream electro-optical mass concentration sensor, and a source of gas flow for transporting aerosols past said upstream electro-optical mass concentration sensor at a known upstream volumetric flow rate; a deposition zone for collecting aerosols on or within a media; a downstream electro-optical mass concentration sensor for measuring the mass concentration of aerosols uncollected in said deposition zone, and a conduit for transporting uncollected aerosols past said downstream electro-optical mass concentration sensor at a known downstream volumetric flow rate; and a controller connected to said upstream and downstream mass concentration sensors and determining the net mass of aerosols collected within said deposition zone by integrating over time the product of mass concentration measured by said upstream electro-optical sensor and the known upstream volumetric flow rate minus the product of mass concentration measured by said downstream electro-optical sensor and the known downstream volumetric flow rate.