Patent ID: 6927066
Filing Date: 2005-08-09
Classification: G01N,Y10S,Y10T

Abstract:
1. A process for determining methyl ter butyl ether (MTBE) vapours, in concentrations equal to or higher than 0.1 ppm, in the ground and overlying atmosphere comprising: a) adopting a series of MTBE vapour sensors of which at least one in the earth, equipped with a membrane permeable to gases and impermeable to water, and at least one in the air on the surface of the ground, these sensors comprising b) continuously observing the resistance variations of the sensitive elements by interaction with MTBE, comparing the signals emitted by the sensor in the earth and the sensor in the air on the ground-surface; and evaluating on the basis of this comparison the presence and concentration of MTBE in the surface layers or depths of the ground and in the atmosphere above the ground itself.