By J. Inczédy and I. Buzás (Auth.)
Read or Download Analytical Applications of Ion Exchangers PDF
Best hydraulics books
The definitive reference. . . now thoroughly up to date to mirror the newest advances in hydraulic engineering carrying on with its traditon of excellence because the regular reference on hydraulics for greater than seventy five years, this seminal paintings has been completely revised and up-to-date to assist practising engineers clear up hydraulic engineering difficulties good into the following century.
One learning the movement of fluids relative to particulate platforms is quickly inspired by means of the dichotomy which exists among books overlaying theoretical and sensible facets. Classical hydrodynamics is essentially enthusiastic about ideal fluids which regrettably exert no forces at the debris prior which they stream.
Additional resources for Analytical Applications of Ion Exchangers
In forming this order the valence of the ion and the volume of the hydrated ion play roles of similar import ance to those for the strongly acidic resins. The order of affinity for two strongly basic anion exchangers^ is as follows: Dowex 1: O H - < p - < acetate < HCO3" < CI" < NO2" < < HSO3- < C N - < B r - < NO3- < CIO3- < HSO4- < phenol- ate < I - ; Dowex 2 : F " < acetate < O H - < C I - < NO2" < HSO3- < < C N - < B r - < NO3" < C103~ < HSO4- < I - < phenolate. From the position of the hydroxyl ion in the order a conclusion can be drawn for the base strength of the anion exchanger.
10. Chemical OF ΙΟΝ EXCHANGERS 35 resistance While most silicate-based ion exchangers can be used only over a very small pH range (6-7) the synthetic-resin base ion exchangers are generally stable in acidic and alkaline solution. Both the condens ation- and polymerisation-type cation and anion exchangers possess good resistance to solutions of non-oxidising strong acids. Some analytical procedures prescribe 9-10 Ν hydrochloric acid solution for the separation of metal ions (see Chapter 6). Condensation-type cation exchangers suffer a loss by the action of solutions of strong alkalies.
Pokó, Acta Chim. Acad. Sei. , 1961, 2 9 , 1. 57. G. W. Bodamer and R. Kunin, Ind. Eng. , 1953, 4 5 , 2577. 58. O. D. Bonner, J. Chem. Educ, 1957, 3 4 , 174. 59. Chih-Hsien, E. M. Savitskaya and B. P. Bruns, Vysokomolekulyarnye Soyedineniya, 1960, 2 , 751; Chem. , 1961, 5 5 , 7989. CHAPTER 3 THEORY OF OPERATION OF ION EXCHANGERS IN THE beginning the development of theories concerning the operation of ion-exchange resins was unable to keep level with the rapid develop ment of their applications, and the analyst had to be satisfied with em pirical relations to describe ion-exchange processes.