منابع مشابه
Anion Exchangers: Ion Exchange
An economic comparison of reverse osmosis and ion exchange in Europe. In: Greig JA (ed.) Ion Exchange Development and Applications, pp. 58}66. Cambridge: Royal Society of Chemistry. Nolan J and Irving J (1984) The effect on the capacity of strong base anion exchange resins of the ratio of chloride to sulphate in the feed water. In: Naden D and Streat M (eds) Ion Exchange Technology, pp. 160}168...
متن کاملIon Exchange Chromatography
The separation and purification of various elements by ion exchange chromatography takes advantage of the variation of the electrostatic bond energies of ions in solution. Thus, the two main controlling factors in ion exchange chromatography are the ionic charge (z) and the ionic radius (r). These two are combined in the ionic potential – z/r – that can be used to compare relative electrostatic...
متن کاملSorption Ion Exchange
The case of a sorption process considered here involves a solid phase (sorbent) and a liquid phase (solvent, normally water) containing a dissolved species to be sorbed (sorbate, e.g. metal ions). Due to the higher ‘affinity’ of the sorbent for the sorbate species the latter is attracted into the solid and bound there by different mechanisms. This process takes place until an equilibrium is est...
متن کامل[Ion exchange resins].
Ion exchange resins have been used to help formulate pharmaceuticals since the late 1950's. During that time they have proved to be safe and effective excipients and are now used in many commercial formulations throughout the world. In this article we will look at some of the common problems faced by formulators and how using ion exchange resins may be able to solve them. Ion exchange resins ar...
متن کاملSodium Ion Exchange in
2 3 Na two-dimensional nutation N M R was applied to N a t + *Zr 2 Si v P 3 _ v O, 2 with x = 0, 1, and 2. The nutat ion spectrum in each compound consists of two clearly separated peaks corresponding to the two crystallographically inequivalent sodium sites. In the compound with x = 2 the nuclear quadrupole coupling constants (e Qq/h) and the asymmetry parameters (rj) were by spectral simulati...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1963
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed040p231.2