METHOD OF DETERMINING AIR BIOLOGICAL CONTAMINATION AND DEVICE TO THIS EFFECT Russian patent published in 2008 - IPC G01N21/64 

FIELD: instrument making.

SUBSTANCE: method incorporates fluorimetry of focused volume of air sample with the fluorescence excited, the aforesaid air sample focused volume is formed by a virtual impactor in the air sample major flow separated from optical elements and spectral fluorimeter furnished with a minor air flow without aerosol particles. The device made up of a radiation source and spectral fluorimeter furnished with the fluorescence spectral decomposition optical element incorporates a virtual impactor to generate, at its output, a coaxial major and a minor flow, enveloping the former, the impactor major flow input representing an air sampler and the impactor minor flow input communicating with air medium via a zero-drag filter designed to clear air of aerosol particles. The virtual impactor outlet is connected to the vacuum system.

EFFECT: higher reliability and simpler air contamination estimation procedure.

4 cl, 7 dwg, 3 tbl