DISTRIBUTION COEFFICIENTS AND ION EXCHANGE BEHAVIOUR OF SOME CHLORIDE COMPLEX FORMING ELEMENTS WITH BIO RAD AG50W-XB CATION EXCHANGE RESIN IN MIXED NITRIC-HYDROCHLORIC ACID SOLUTIONS

Abstract The study of the separation of metallic chlorides on Amberlite CG-120 (200–400 mesh) cation exchange resin was continvied. Na, K, Mo, Al, Ca, and Fe have been separated by hydrochloric acid solutions and determined by polarography or flame photometry. Semimicro quantities of these metals can be separated from each other with a minimum of eluting agent, small resin beds, and simple equipment. Mechanical grading of the air-dried resin was used to obtain more uniform particles. The ion exchange separation scheme offers advantages over present official procedures, and it should provide a unified method for the analysis of metals in mixtures. Further study is recommended.

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SEPARATIONS OF THE PLATINUM METALS BY ION EXCHANGE

Canadian Journal of Chemistry ◽

10.1139/v58-122 ◽

1958 ◽

Vol 36 (5) ◽

pp. 835-844 ◽

Cited By ~ 51

Author(s):

S. S. Berman ◽

W. A. E. McBryde

Keyword(s):

Hydrochloric Acid ◽

Ion Exchange ◽

Anion Exchanger ◽

Complete Recovery ◽

Distribution Coefficients ◽

Acid Solutions ◽

Platinum Metals ◽

Hydrochloric Acid Solutions

Distribution coefficients for the chlorides of ruthenium, rhodium, palladium, iridium(III and IV), and platinum have been determined between the anion exchanger Amberlite IRA-400 and hydrochloric acid solutions of various molarities. Separations of various combinations of rhodium, iridium, palladium, and platinum in amounts of 0.5 mg. or less are described. When, in the course of these separations, the four metals are present together, special procedures are required to ensure complete recovery of platinum.

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THE PARTIAL SEPARATION OF Na22 FROM Na24 BY ION EXCHANGE CHROMATOGRAPHY

Canadian Journal of Chemistry ◽

10.1139/v56-006 ◽

1956 ◽

Vol 34 (1) ◽

pp. 65-74 ◽

Cited By ~ 18

Author(s):

R. H. Betts ◽

W. E. Harris ◽

Margaret D. Stevenson

Keyword(s):

Hydrochloric Acid ◽

Ion Exchange ◽

Cation Exchange ◽

Exchange Resin ◽

Isotope Effects ◽

Cation Exchange Resin ◽

Ion Exchange Chromatography ◽

Exchange Chromatography ◽

Partial Separation ◽

Chloride Salts

Mixtures of the radionuclides Na22 and Na24, as the chloride salts, have been partially separated by chromatographic methods. A column 102 cm. in length containing the cation exchange resin Dowex 50 was used. The eluant was 0.7 M hydrochloric acid. Na22 is held more strongly by the resin than is Na24. The most effective separations were obtained at 25 °C and 5.5 °C.; experiments at 48 °C and 68 °C showed much smaller isotope effects.

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Simplified radioimmunoassay of urinary drugs of abuse adsorbed on ion-exchange papers.

Clinical Chemistry ◽

10.1093/clinchem/23.10.1921 ◽

1977 ◽

Vol 23 (10) ◽

pp. 1921-1924 ◽

Cited By ~ 1

Author(s):

G J Alexander ◽

S Machiz

Keyword(s):

Ion Exchange ◽

Cation Exchange ◽

Drugs Of Abuse ◽

Exchange Resin ◽

Cation Exchange Resin ◽

Screening Procedure ◽

Central Laboratory ◽

Small Disc

Abstract A convenient screening procedure for presence of drugs of abuse in urine consists of two steps: adsorption of the drugs from urine onto a paper loaded with cation-exchange resin and detection of the adsorbed drugs by direct radioimmunoassay. The first step can be performed in the field, the second in a central laboratory. Storage and transport to the laboratory are simplified because specimens adsorbed on dried paper are stable and can be sent in letter-mail. In the laboratory, a small disc of the ion-exchange paper is exposed to antigen and antibody, rinsed, and tested for radioactivity. Discs treated with positive urines are more radioactive than discs from negative urines.

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Separation of Manganese, Cobalt, Copper, Zinc, and Magnesium By Using an Anion Exchange Resin

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/50.4.783 ◽

1967 ◽

Vol 50 (4) ◽

pp. 783-786

Author(s):

Eugene A Breatjlt

Keyword(s):

Ion Exchange ◽

Anion Exchange ◽

Exchange Resin ◽

Anion Exchange Resin ◽

Ion Exchange Resin ◽

Acid Solutions ◽

Resin Column ◽

Hydrochloric Acid Solutions ◽

Copper Zinc ◽

Resin Separation

Abstract The metals Mn, Mg, Co, Cu, and Zn were separated by using an anion exchange resin column and progressively less concentrated IIC1 solution as eluting agent. The position of Mg on an anion exchange resin, not previously reported in the literature, was determined. It has been shown that by using two different ion exchange resin columns, simple hydrochloric acid solutions as eluants, and polarographic or flame photometric determinations, 12 metals can be separately estimated in an aqueous solution containing about 100 /μg of each. It is recommended that the study of ion exchange resin separation of metals found in plants be continued.

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Ion Exchange Method for Rapid Determination of Alkalinity of Water-Soluble Tea Ash Containing High Levels of Manganese

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/63.3.460 ◽

1980 ◽

Vol 63 (3) ◽

pp. 460-461

Author(s):

Saidul Z Qureshi ◽

Fadhil M Najib ◽

Fahmi A Mohammed

Keyword(s):

Ion Exchange ◽

Cation Exchange ◽

Exchange Resin ◽

Rapid Determination ◽

Cation Exchange Resin ◽

Water Soluble ◽

Exchange Method ◽

Strong Cation Exchange ◽

Ion Exchange Method

Abstract An ion exchange method to determine the alkalinity of water-soluble tea ash containing high levels of manganese is described. A chromatographic column containing a strong cation exchange resin (20–50 mesh) in Na+ form, with a bed volume of 5 mL is used. The present ion exchange method is compared to pH titrations and also to the official AOAC methods (31.012, 31.015, 31.016). Results with the new method are accurate and precise.

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