Method for analysing molecular pollution of a fluid, application device and application to the analysis of pollution in a natural medium and in a controlled environment

A method for analyzing molecular pollution of a fluid, comprising:

• a) producing a calibrated flow of the fluid;
• b) filtering the fluid with calibrated flow to retain particulate and nanoparticulate pollutants;
• c) measuring in real time a total amount of molecular pollutants present in the fluid with calibrated flow and downstream from the filtering;
• and
• d) determining chemical compositions and a relative amount of molecular pollutants adsorbed in at least one sample made in adsorbent material(s) placed on a circuit of the fluid with calibrated flow downstream from the measuring the total amount, the determining taking place simultaneously and/or at predetermined time intervals relatively to an instant when a threshold value of a total amount of molecular pollutants present in the fluid with calibrated flow and measured in real time is exceeded.

A device for analyzing molecular pollution of a fluid present in an environment, comprising:

• means for calibrating flow of the fluid;
• means for particle filtration of the fluid with calibrated flow to retain particulate pollutants;
• means for measuring in real time a total amount of the molecular pollutants present in the fluid with calibrated flow, the measurement means being laid out on a circuit of the fluid with calibrated flow downstream from the means for filtration;
• alarm means for when the total amount of the non-particulate pollutants present in the fluid with calibrated flow is in excess;
• at least one sample made in adsorbent material(s) placed on the circuit of the fluid with calibrated flow downstream from the measurement of the total amount;
• means for determining chemical compositions and their relative amount in the at least one sample made in adsorbent material(s).