Odour Source Identification and Support of industrial Odour Management
GC-IMS technology allows
to measure and monitor complex odour containing VOC mixtures in the field and
helps identifying the odour source. Its portability and especially when
attached to the circular gas flow unit (CGFU) make the instrument a very
flexible and innovative on-site tool with uncompromised analytical precision.
Molecular based analytical instruments such a s GC-MS set-ups require a
lab infrastructure with high purity gas supplies and vacuum pumps which make it
very challenging to bring to the field. In 2015 G.A.S. launched the circular gas flow unit which is fully
controlled by the GC-IMS instrument firmware, purifies air and allows operating
the GC-IMS independent from Lab-installed gas supply. It is also possible to run the GC-IMS power-source independent for
several hours through a standard battery which can be used stand-alone or
integrated into a car. Excellent separation of low molecular weight volatile compounds is
achieved by using a short 15 m capillary column with a large inner diameter of
0.53 mm. It is demonstrated that GC-IMS
2D fingerprints show different patterns for different industrial odour sources
which allow to differentiate the origin of the odour containing VOC mixture.
Full molecular elucidation of the complex VOC mixtures is on-going.