wide application fcir NhlR studies of polymer systems which have functional groups which can be comi)lesed. LITERATURE CITED
(1) Bilrneyer, F. W.,Jr., “Textbook of Polymer Science,” pp. 53-4, Interscienve, Sew York, 1962. (2) Errera, J., Gaspart, R., Sack, H., J . C‘hem. Phys. 8, 63-’71 (1940). (3) Fiwher, Karl, .4ngrew. Chem. 48, 394 (1935). (4) Gordy, Walter, .1. Chem. Phys. 7, (33-9 (1939).
(5) Hanna, J. G., Siggia, 567 297 (1962).
S.,J . Polymer
(6) Hatern, Simone, Yalladas-Ihbois, Suzanne, Bull, sot, Chim, France 604-7 (1949). ( 7 ) Hendrickson, J. G., ANAL CHEM.36, 126-8 (1964). 18) J . A m . Chem. SOC.86, . . Kina, 1%.W., 1256-8 (1964): (9) Martin, Maryvonne, Herail, Frangoise, Compt. Rend. 248, 1994-6 (1959). (10) Pople, J. A., Schneider, IT. G., Bernstein, H. J., “High Resolution Nuclear Magnetic Resonance,” Chap. 6, McGraw-Hill, Xew York, 1959. (11) Price, G. F., “Techniques of Polymer Characterization,” P. W. Allen, ed.,
Chap. 7, Academic Press, Yew York, 1959. (12) Shukla, 11. P., Bhagwat, W. V., Agra. Univ. J . Res Sci. Suppl. 4, 645-50 (1955). (13) Siggia, S., Hanna, J . G., ANAL. CHEM.33, 896 (1961). 114) SlornD. G., J . Am. Chem. SOC.82. 999-1 oob’( 1980). (15) Whitman, I]., J . Mol. Spectry. 10, 250-62 (1963). RECEIVEDfor review April 1, 1964. Accepted June 19, 1964. Presented in part at the Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, March 2, 1964.
Extractability of Selected Metal Ions with High Molecular Weight Amines Application to the Separation and Determination of Iron and Cobalt in Ferrous Alloys B. E. McCLELLAN’ arid V. M. BENSON Department o f Chemistry, The University o f Mississippi, University, Miss.
b A number of transition metal ions were tested for extractability from hydrochloric acid solution with several high molecular weight amines dissolved in carbon tetrachloride. Only aliphatic amines of high molecular weight were found to b e useful extractants for iron(lll), cobaIt(ll), manganese(ll), and copper(l1). Primary amines were found to b e somewhat effective as extractants for manganese (11) and copper(l1). Iron(ll1) and cobalt(l1) were quantitatively separated b y extraction from i!M HCI with trioctylamine dissolved in carbon tetrachloride. Under these conditions the iron(II1) extracts almost completely, while no cobalt(l1) e.ntracts. Several ferrous alloys were analyzed for iron and cobalt by separation using solvent extraction followed b y spectrophotometric analysis. An empirical method was developed whereby 100% extraction was not essential for a quantitative determination. The method is rapid and accurate for a large variety of ferrous alloys.
S
and Page (14) were first to repoit the use of high molecular
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