Reference

Standard enthalpy of iron(2+) ion formation in an aqueous solution at 25°

Standard enthalpy of iron(2+) ion formation in an aqueous solution at 25°. Vasil'ev, V. P.; Vasil'eva, V. N.; Dmitrieva, N. G. (Ivanov. Khim.-Tekhnol. Inst., Ivanovo, USSR). Zh. Neorg. Khim., 23(4), 888-91 (Russian) 1978. CODEN: ZNOKAQ. ISSN: 0044-457X. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The heat of soln. of (NH4)2Fe(SO4)2.6H2O [7783-85-9] in 2-4 N HClO4 was detd. calorimetrically at 25°. The std. enthalpy of formation of Fe2+ in aq. solns. and the std. enthalpy of formation of aq.- and HClO4-solns. of (NH42Fe(SO4)2.6H2O were calcd.

A rapid and specific titrimetric method for the precise determination of plutonium using redox indicator

A rapid and specific titrimetric method for the precise determination of plutonium using redox indicator. Chitnis, R. T.; Dubey, S. C. (Fuel Reprocess. Div., Bhabha At. Res. Cent., Bombay, India). India, A. E. C., Bhabha At. Res. Cent. [Rep.], B. A. R. C.-850, 10 pp. (English) 1976. CODEN: IABRAA. DOCUMENT TYPE: Report CA Section: 71 (Nuclear Technology) Section cross-reference(s): 79 A simple and rapid method is discussed for detg. Pu in Pu nitrate soln., and its application to process solns. from the reprocessing of irradiated fuel elements is described. The method involves the oxidn. of Pu to Pu(VI) with the help of AgO [1301-96-8], followed by the destruction of the excess AgO by using sulfamic acid. The detn. of Pu is completed by adding FeSO4.(NH4)2SO4.6H2O (I) [7783-85-9] soln. which reduces Pu(VI) to Pu(IV) and titrating the excess I with std. K2Cr2O7 soln. using Na diphenylamine sulfonate [30582-09-3] as the internal indicator. The effect of various reagents added during the oxidn. and redn. of Pu, on the final titrn. was studied. The method works satisfactorily for the anal. of Pu in the range 0.5-5 mg. The precision of the method is within 0.1%.