By Garcia J.L.L., de Castro M.D.L.
This e-book goals to supply scientists with information regarding a sequence of options that may be used so one can facilitating the transformation of the pattern to a suitable country for next detection or quantitation of its parts of curiosity. The suggestions handled diversity from the extremely simple ones (e.g. freeze-drying) to different extra complicated ones (e.g. glow discharge and laser-induced breakdown sampling).
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Extra info for Acceleration And Automation Of Solid Sample Treatment
Depending on the dimensions of the container and on the fill volume of the product, the product temperature is maintained at shelf level for a specified period of time to ensure the formation of a completely frozen matrix. In general, the term "shelf temperature" as applied to freeze-drying refers to the shelf fluid rather than to the shelf surface temperature. The shelf temperature may represent the fluid temperature in a reservoir, the inlet or outlet temperature of the fluid to the shelves or the fluid temperature in the inlet or outlet of the shelf manifold.
3). The product is either frozen in a freezer (by direct submersion in a low-temperature bath) or shelf-frozen, depending on the nature of the initial and end product, and also on the volume to be freeze-dried. The pre-frozen product must be immediately attached to the drying chamber or manifold to prevent 20 Analyticalfreeze-d~ing Fig. 3. Manifold-based freeze-dryer. ) warming. The product container should be rapidly evacuated and the operator must rely on evaporative cooling to maintain the product temperature.
T. V. M. Byr'ko, Yad. Fiz. Metodv Anal. Kontrole Okruzh. Sredy, 129 (1985) 34. H. D. H. Zoller, Anal. , 129 (1975) 1685. H. Lieser, W. Calmano, E. Heuss and V. Neitzert, J Radioanal. , 37 (1977) 717.