- 作者: K. R. Kar; R. K. Srivastava; Brij Bhushan
- 作者服務機構: Department of Chemistry University of Delhi, Delhi-110007, India
- 中文摘要: Sorption of ammine complexes of Ni+2, Cu+2, Zn+2 and Cd+2 on hydrous Tin dioxide has been studied at different pH values. It has been found that qA and Kd values attain a maximum with increasing pH, beyond which a fall is observed. The selectivity quotients of the exchanger material towards competing pairs (Cu+2-Zn+2, Cu+2-Cd+2, Cu+2-Ni+2) of complex ions have been measured as a function of the concentration of the external solution. The selectivity of the exchanger material towards the preferred ion decreased with increase in the concentration of the competing ions in the external solution. The selectivity and the sorption values (qA) follow the same order.
- 英文摘要: --
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