Apparatus and method for detecting and classifying chemicals, particles, vira, and bacteria in fluids

A method of collecting, sorting, concentrating and impinging particles on a surface of a non-living bioreceptor, comprising:

• capturing an air sample by drawing it through an intake;
• mechanically and/or aerodynamically filtering the sample to remove particles>10 μm;
• using a dam to set up a local vortex to isokinetically sort particles by density and aerodynamioc diameter;
• and
• selecting and impinging particles from said simple within a selected size range on a surface of said bioreceptor to introduce said agent to said surface of said bioreceptor, wherein said bioreceptor consists essentially of non-livingsensor molecules selected from the group consisting of aptamers, single-chain nucleic acids, double-chain nucleic acids, hybridized chemicals incorporating these molecules and combinations thereof that produce a change in electrical potential when binding to said agent.

An apparatus for biosensing an agent by collecting, sorting, concentrating and impinging particles on a surface of a non-living bioreceptor, comprising:

• means for capturing a an air sample by drawing it through an intake;
• means for mechanically and/or aerodynamically filtering the sample to remove particles>10 μm;
• means to set up a local vortex with a dam to isokinetically sort particles by density and aerodynamic diameter;
• and
• means for selecting and impinging particles within a selected size range on a surface of said bioreceptor to introduce said agent to said surface of said bioreceptor, wherein said surface is disposed within the apparatus and said bioreceptor consists essentially of non-living sensor molecules selected from the group consisting of aptamers, single-chain nucleic acids, double-chain nucleic acids, hybridized chemicals incorporating these molecules and combinations thereof that produce a change in electrical potential when binding to said agent.