Chromatographic cation exchange separation

Benker, D. E. Chattin, F. R. Collins, E. D. Knauer, J. B. Orr, P. B. Ross, R. G. Wiggins, J. T. "Chromatographic Cation Exchange Separation of Decigram Quantities of Californium and Other Transplutonium Elements", paper presented at Symposium on Industrial Scale Production-Separation-Recovery of Transplutonium Elements, 2nd Chem. Congr. North American Continent, Las Vegas, NV, 1980. 

Chromatographic Cation Exchange Separation of Decigram Quantities of Californium and Other Transplutonium Elements... 

The Multi-Purpose Processing Facility was installed in F Canyon (reprocessing plant) at SRP for separation of Californium and trans-californium elements using newly developed, high-pressure, chromatographic cation exchange processes. 

Ishii, D., Hirose, A., Hibi, K., and Iwasaki, Y., Studies on micro high-performance liquid chromatography. 5. Design of a microscale liquid chromatograph and its application to cation-exchange separation of alkali-metals. Journal of Chromatography 157(Sep), 43-50,1978. 

The einsteinium-fermium and californium fractions collected during the initial separation described above are processed by means of a second cycle of high-pressure chromatographic cation exchange for additional partitioning of the actinide elements. The equipment and processing steps are similar to those described above. 

Fig. 3-132. Separation of alkali metals on a latex cation exchanger. - Separator column Fast-Sep Cation I chromatographic conditions see Fig. 3-129.

Xu, W. and Regnier, EE., /. Chromatogr. A, Protein-protein interactions on weak-cation-exchange sorbent surfaces during chromatographic separations, /. Chromatogr. A, 828, 357, 1998. 

Simultaneous determination of both cations and anions in acid rain has been achieved using a portable conductimetric ion-exclusion cation-exchange chromatographic analyzer.14 This system utilized the poly(meth-ylmethacrylate)-based weak acid cation exchange resin TSK-Gel OA-PAK-A, (Tosoh , Tokyo, Japan) with an eluent of tartaric acid-methanol-water. All of the desired species, 3 anions and 5 cations, were separated in less than 30 minutes detection limits were on the order of 10 ppb. Simultaneous determination of nitrate, phosphate, and ammonium ions in wastewater has been reported utilizing isocratic IEC followed by sequential flow injection analysis.9 The ammonium cations were detected by colorimetry, while the anions were measured by conductivity. These determinations could be done with a single injection and the run time was under 9 minutes. 

Okada, T. (1990). Chromatographic oligomer separation of poly(oxyethylenes) on potassium ion-form cation-exchange resin. Anal. Chem. 62(4), 327-331. 

Atomic absorption spectrometry has been used to determine caesium in seawater. The method uses preliminary chromatographic separation on a strong cation exchange resin, ammonium hexcyanocobalt ferrate, followed by electrothermal atomic absorption spectrometry. The procedure is convenient, versatile, and reliable, although decomposition products from the exchanger, namely iron and cobalt, can cause interference. 

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