By Anil K. Mukherji, R. Belcher and M. Frieser (Auth.)
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Extra info for Analytical Chemistry of Zirconium and Hafnium
Analit. Khim. 20, 128 (1965). HUME, D . , Anal. Chem. 21, 322 (1949). ELINSON, S. V. and LIMONIK, M. , Zavod. Lab. 24,1434 (1958). LUKYANOV, V. F. and KNYZEVA, E. , Zh. Analit. Khim. 19, 899 (1964). SHOME, S. C , Analyst, 75, 27 (1950). , Chemistry of Specific, Selective and Sensitive Reactions, Academic Press, New York, 1949. ASTANINA, A. A. and OSTROUMOV, A. , Zh. Analit. Khim. 6, 27 (1951). STACHTCHENKO, J. and DUVAL, C , Anal. Chim. Acta, 20, 154 (1959). 135. ADAMS, R. W. , Analyst, 89, 603 (1964).
Add 10-15 ml of 2% starch solution; remove air by addition of sodium bicarbonate and add 2-4 g Kl. 01 N thiosulfate. 232 mg Hf. COMPLEXOMETRIC REACTIONS Direct titration methods for the determination of zirconium and hafnium have been revolutionized since the introduction of EDTA as a titrant. A number of direct and indirect methods have been proposed. Indirect methods(15_21) have been favored because of the complications of hydrolysis accompanied with the direct titration procedures. A survey of direct titration procedures shows that they do not offer both a sharp endpoint and acceptable accuracy.
Analit. Khim. 6, 27 (1951). STACHTCHENKO, J. and DUVAL, C , Anal. Chim. Acta, 20, 154 (1959). 135. ADAMS, R. W. , Analyst, 89, 603 (1964). 136. , Anal. Chim. Acta, 35, 491 (1966). 137. ROWE, J. , and JACKSON, W. , Talanta, 12, 101 (1965). 138. , GREFF, G. , Anal. Chim. Acta, 34, 78 (1966). 139. DANTEL, A. and DUVAL, C , Anal. Chim. Acta, 20, 154 (1959). 140. SINGHAL, S. P. and RYAN, D . , ibid. 35, 195 (1966). 141. DUTT, Y. and SINGH, R. , Indian J. Appl. Chem. 26, 77 (1963). 142. MAJUMDAR, A. K.
Analytical Chemistry of Zirconium and Hafnium by Anil K. Mukherji, R. Belcher and M. Frieser (Auth.)