412 RADIOISOTOPES IN BIOLOGY AND AGRICULTURE 



20. Sutton, William J. L., and Emory F. Almy: Separation of Sodium, Potassium, 

 Magnesium, and Calcium in Milk Ash by Ion-exchange Chromatography J 

 Dairy Sci., 36: 1248-1254 (1953). 



21. Cranston, H. A., and J. B. Thompson: Use of an Ion-exchange Resin in Deter- 

 mination of Traces of Copper, Ind. Eng. Chem. Anal. Ed., 18: 32.3-326 (1946). 



22. Schubert, Jack, Edwin R. Russell, and Lawrence B. Farabee: The Use of Ion 

 Exchange for the Determination of Radioelements in Large Volumes of Urine 

 Science, 109: 316-317 (1949). 



23. Russell, Edwin R., Roman C. Lesko, and Jack Schubert: A Direct Method for 

 Determining Radium in Exposed Humans, Nucleonics, 7: 60-64 (1950). 



24. Tompkins, P. C, L. B. Farabee, and J. X. Khym: Procedure for the Radio- 

 chemical Analysis of Barium, Strontium, and the Rare Earths in Human Urine 

 AECD-2692, 1949. 



25. Lafferty, R. H., Jr.: Use of Ion Exchangers in Analytical Chemistry AECD- 

 2414, Nov. 19, 1948. 



26. Carritt, Dayton E.: Separation and Concentration of Trace Metals from Natural 

 Waters, Anal. Chem., 25: 1927-1928 (1953). 



27. Cohn, W. E., D. G. Doherty, and Elliott Volkin: The Products of Ribonucleic 

 Acid Hydrolysis and Their Relationship to Its Structure, Phosphorus Metabolism 

 2:339-354(1952). 



28. Cohn, Waldo E.: Some Results of the Applications of Ion-exchange Chromatog- 

 raphy to Nucleic Acid Chemistry, J. Cellular Comp. Physiol., 38 (Supplement 1)- 

 21-40(1951). ' 



29. Cohn, W. E.: The Anion-exchange Separation of Ribonucleotides, J Am Chem 

 Soc, 72: 1471-1478 (1950). 



30. Polls, B. D., and John G. Reinhold: The Determination of Total Base of Serum 

 by Ion Exchange Reactions of Synthetic Resins, /. Biol. Chem., 156: 231-236 



31. Schubert, Jack, Edwin R. Russell, and Lawrence S. Myers, Jr.: Dissociation 

 Constants of Radium-Organic Acid Complexes Measured by Ion Exchange J 

 Biol. Chem., 185: 387-398 (1950). 



32. Schubert, Jack: Ion Exchange Studies of Complex Ions as a Function of Tem- 

 perature, Ionic Strength, and Presence of Formaldehyde, / Phys Chem 56- 

 113-118 (1952). ■' ■ 



33. Moller, Jorgen, and Thorkil Mogensen: Use of an Ion-exchanger for Determining 

 Available Phosphorus in Soils, Soil Sci., 76: 297-306 (1953). 



34. Kessler, Bruce J., John B. Liebler, Jesse I. Abrahams, and Martin Sass- Reduction 

 of Hyperkalemia by Circulating Blood through a Cation Exchange Resin Proc 

 Soc. Exptl. Biol. Med., 84: 508-510 (1953). 



35. McChesney, Evan W.: Studies of Cation Exchange Resins; Their Optimal Potas- 

 sium Content for Clinical Use, /. Lab. Clin. Med., 38: 199-209 (1951) 



36. McChesney, Evan W.: In Vivo Uptake of Cations by Two Types of Exchange 

 Resins, Am. J. Physiol., 168: 44-54 (1952). 



37. McChesney, Evan W.: Neutrality Regulation Mechanisms in Rats Receiving 

 Sulfonic Ion Exchange Resin, Proc. Soc. Exptl. Biol. Med., 79: 531-534 (1952) 



38. Best, Maurice M., and Joan D. Wathen: Biochemical and Clinical Effects Result- 

 ing from the Administration of a Cation-Anion Exchange Resin in Decompen- 

 sated Hepatic Cirrhosis, J. Lab. Clin. Med., 42: 518-529 (1953). 



