By Garcia J.L.L., de Castro M.D.L.
This e-book goals to supply scientists with information regarding a chain of concepts that may be used so as to facilitating the transformation of the pattern to a suitable nation for next detection or quantitation of its elements of curiosity. The concepts 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 resources for Acceleration And Automation Of Solid Sample Treatment
A conventional freezing procedure will be more efficient than freeze-drying if it results in smaller losses of volatile e l e m e n t s - a combination of the two may be the ideal choice . In some cases, however, freeze-drying is the best choice; for example, it results in the smallest losses of amino acids and amine nitrogen . Analytical freeze-drving 39 Whether freeze-drying is the technique of choice for a given matrix should only be decided upon after the stability and retention of the target species have been examined as the results for specific samples and compounds can rarely be extrapolated to others.
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.
They allow small production lots to be freezedried with a view to assessing the marketing potential of new products. 7. G E N E R A L AIMS OF ANALYTICAL FREEZE-DRYING A product can be freeze-dried for various purposes depending on the particular features the resulting material is required to possess. Below are discussed some of the more salient uses of the freeze-drying technique. 1. Increasing long-term storage stability The very essence of the freeze-drying process is that it is a stabilizing process.