Method and device for collecting and analysing airborne particles

A method for collecting and analysing airborne particles, comprising:

• precipitating particles from air on a collecting surface;
• injecting a first reservoir with elution liquid to store the elution liquid in the first reservoir under pressure resulting from the injecting, an outlet of the first reservoir being blocked by a first meltable compound;
• heating the first reservoir containing the elution liquid to a first temperature value to melt the first meltable compound;
• conveying, via the pressure of the first reservoir, the elution liquid through an elution fluidic circuit to the collecting surface;
• conveying the elution liquid along with the precipitated particles through the elution fluidic circuit to a reaction chamber of an analysis module;
• heating the reaction chamber to a second temperature value higher than the first temperature value, so as to activate a detection reaction in said reaction chamber;
• isolating said reaction chamber during the detection reaction by melting a second meltable compound and sealing said reaction chamber by setting the second meltable compound when the temperature drops to a third temperature value lower than said second temperature value;
• and
• analyzing the airborne particles collected in the reaction chamber.