Preconcentration of Trace Elements by Precipitation Ion Exchange Using Organic-Hydrochloric Acid.

1965 ◽  
Vol 37 (12) ◽  
pp. 1565-1568 ◽  
Author(s):  
R. R. Ruch ◽  
Fouad. Tera ◽  
G. H. Morrison
Keyword(s):  
Trace Elements ◽  
Hydrochloric Acid ◽  
Ion Exchange

Ion Exchange Recovery of Platinum(IV) from Hydrochloric Acid Solutions in the Presence of Silver(I)

2020 ◽  
Vol 94 (4) ◽  
pp. 828-834
Author(s):  
O. N. Kononova ◽  
E. V. Duba ◽  
A. S. Efimova ◽  
A. I. Ivanov ◽  
A. S. Krylov
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions

scholarly journals Ion Exchange Properties of a Terpolymer Resin Derived from 2, 4-Dihydroxybenzaldehyde, Oxamide and Formaldehyde

2009 ◽  
Vol 6 (3) ◽  
pp. 639-650 ◽  
Author(s):  
M. V. Tarase ◽  
W. B. Gurnule ◽  
A. B. Zade
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Metal Ions ◽  
Metal Ion ◽  
Polymer Sample ◽  
Equilibrium Method ◽  
Wide Ph Range ◽  
Ph Range ◽  
Exchange Properties

Terpolymer resins (2,4-DHBOF) were synthesized by the condensation of 2,4-dihydroxybenzaldehyde and oxamide with formaldehyde in the presence of hydrochloric acid as catalyst, proved to be selective chelation ion exchange terpolymer resins for certain metals. Chelation ion exchange properties of these polymers were studied for Fe+3, Cu+2, Hg+2, Cd+2, Co+2, Zn+2, Ni+2and Pb+2ions. A batch equilibrium method was employed in the study of the selectivity of the distribution of a given metal ions between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in a media of various ionic strengths. The polymer showed a higher selectivity for Fe+3, Cd+2and Co+2ions than for Cu+2, Hg+2, Zn+2, Ni+2and Pb+2ions.

Collaborative Study of an Ion Exchange Method for Ephedrine in Ephedrine Sulfate Sirup NF

1969 ◽  
Vol 52 (4) ◽  
pp. 854-857
Author(s):  
Donald J Smith
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Positive Charge ◽  
Exchange Resin ◽  
Collaborative Study ◽  
Cation Exchange Resin ◽  
Polystyrene Sulfonate ◽  
Resin Column ◽  
Exchange Method ◽  
Ion Exchange Method

Abstract An ion exchange procedure for Ephedrine Sulfate Sirup NF, based on the ability of ephedrine to be retained on a polystyrene sulfonate cation exchange resin column, was studied collaboratively by eight laboratories. The compound is held on the column by a positive charge located in the cationic center of the molecule, it is then eluted with hydrochloric acid, and its ultraviolet absorption is measured. The addition of 57.88 mg ephedrine sulfate to Ephedrine Sulfate Sirup NF resulted in recoveries of 58.39 and 57.72 mg, or 101 and 100%, respectively. Recoveries for collaborative samples, each containing 19.22 and 19.33 mg/5 ml, were 99.8 ± 1.83 and 101 ± 4.09%, respectively.

Preconcentration of Trace Elements by Precipitation Ion Exchange.

1965 ◽  
Vol 37 (3) ◽  
pp. 358-360 ◽  
Author(s):  
Fouad. Tera ◽  
R. R. Ruch ◽  
G. H. Morrison
Keyword(s):  
Trace Elements ◽  
Ion Exchange

scholarly journals Determination of trace elements in copper by ion-exchange separation using EDTA as a matrix masking reagent

2003 ◽  
Vol 52 (11) ◽  
pp. 1025-1028
Author(s):  
Hitoshi YAMAGUCHI ◽  
Shinji ITOH ◽  
Shin’ichi HASEGAWA ◽  
Kunikazu IDE ◽  
Takeshi KOBAYASHI
Keyword(s):  
Trace Elements ◽  
Ion Exchange ◽  
Ion Exchange Separation
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