Published: Mar 1996
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THIS CHAPTER IS DEVOTED TO those dissolution schemes that by reason of uniqueness deserve to be treated as separate categories from the straight acid methodology described in Chapter Six. Each of this diverse group of techniques occupies a special niche in the metals analyst's bag of tricks; however, it is unlikely that any laboratory will need to use them all routinely. Here, as with the straight acid dissolution of inorganic materials, the role of particle size is critical to the control of reaction rate. Thus, sinters and fusions will always require very finely divided materials to ensure an intimate mixture with the flux, while inclusion isolation techniques will always require a monolithic solid to moderate reaction rates and to prevent dissolution of the isolates. Before beginning, we must again acknowledge the invaluable aid of the referenced texts by R. Bock and by J. Dolezal, P. Povondra, and Z. Sulcek.