Abstract: A rotating toroid for supporting a plurality of sorbent vessels therein and has sealing assemblies. The rotating toroid is fluidly isolated from stationary stator assemblies having stationary ducting and stationary sealing assemblies. The sealing assemblies of the rotating toroid and the sealing assemblies of the stationary stator assemblies work in cooperation with one another to fluidly isolate the plurality of sorbent vessels. As the toroid rotates about a rotational axis, each of the plurality of vessels passes by each of the stationary sealing assemblies, allowing a fluid to flow from one stationary assembly, through the sorbent vessel, to another stationary sealing assembly, allowing the sorbent vessel to sorb or desorb a fluid component.

Abstract: The invention relates to a chamber for analyzing a sample by means of Raman spectroscopy, characterized in that the chamber is provided in the form of an opaque parallelepiped having: (a) on one of the vertical walls thereof, a hatch for introducing a sample; (b) on the bottom wall thereof, a first opening, and means (4) for attaching a light source, for providing excitation radiation, and a lens (22) enabling the convergence of the excitation radiation so as to define a focal point for the excitation radiation; and (c) a second opening and means for attaching a sensor enabling the Raman scattered light to be detected on a vertical wall or the bottom wall, said attachment means (4) including adjustment means (8) for varying said focal point of the excitation radiation along a vertical axis, so as to enable an adjustment of the height of said focal point within the analysis chamber.