This paper describes the construction and optimization of a recently introduced micro-GC (micro-chemicals in air detector, ♜AD) for the analysis of air and gaseous samples. Ultimately, chromatography is performed at the scale of microchips (micro-electro-mechanical systems, MEMS) 5–7 although this level of miniaturization has not been implemented in practice.
#Agilent chemstation b.03.02 installation guide portable
Scaling down a system to a portable size requires the implementation of new technologies in hardware components (column, pneumatics) and in micro-electronics for system control. These latter systems, however, often require additional parts (external power sources, gas supplies, etc.) limiting their portability. Some commercial devices are equipped with (mass) selective detection and this improves the versatility of these instruments. The second type is basically a scaled-down bench top system and can incorporate sample enrichment, chromatographic separation and universal or selective detection. 1 These instruments are generally used in cases where the target application is well defined (e.g., one compound or a class of compounds).
The first type includes (hand) portable systems based on sensors or selective detectors where no chromatographic separation is involved. There are two main types of field portable instruments for monitoring chemicals in air samples.
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