Phased air-based analyzer

The high sensitivity of this MGA is due to the large number of stages (20 0) and short response time of the preconcentrator (left-hand side of Eig. 9.3.2a), consisting of an array of rapidly heatable micro-elements that can adsorb gas components and later rapidly and precisely desorb them via a thermal pulse into the sample stream, 

Other stationary phase materials are also being investigated, such as coatings of dimethylpolysiloxane (PDMS) (with or without 5% the diphenyl doping), carbosilanes and Nanoglass, provided by Ohio Valley, SeacoastSciences, Dow Chemical and Honeywell SM (Nanoglass), respectively, which may or may not feature nanopores. 

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