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Kanesho Soil Treatment Sprl/bvba

Gerhard Horner

Reiner Kober

Thomas Christen

Joachim Bargon

Erich Probeck

Hans Ziegler

Fritz Vögtle

Wolf Stegmaier

Fritz Voegtle

The invention relates to a method and a device () for detecting volatile analytes in air samples, where a masssensitive sensor () with at least one sensor area () which is equipped with a surface layer with selective sensitivity for the analyte(s) to be detected is brought into contact with the air sample to be analyzed, the mass change of the surface layer is detected in the form of electrical signals and the electrical signals are evaluated. It is provided in accordance with the invention that the sensor signal is already evaluated at a point in time at which the maximum sensor signal for the analyte concentration in question is not yet obtained.

Method and device for detecting volatile analytes in air samples

The present invention relates to a method and a device for detecting fumigants in air samples. The device can be designed for example as a portable analyzerequipped with a stab probefor sampling soil air. There are provided detection meanswhich, upon contact with the air sample, generate electrical signals which depend on the concentration of the fumigants to be detected in the air sample. In accordance with the invention, the detection meanscomprise at least one mass-sensitive sensor, for example an array of quartz microbalances, which have suitable selective surface layers.

Method and device for detecting fumigants in air samples

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Munich, Germany

Gerhard Horner