Mechanical manipulation under the miscroscope using the general capillary cone techniques for qualitative inorganic analysis of microgram samples, first outlined by Benedetti-Pichler (28) in 1937 and subsequently refined by Benedetti-Pichler and Cefola (25, 29, 32), have been successfully applied to the solution of extremely interesting problems in the field of nuclear research during World War II. These techniques proved very valuable in the isolation of the first pure samples of the transuranium elements neptunium (160), plutonium (52, 69, 71, 72, 210), americium (70) and curium (69), with the atomic numbers 93, 94, 95 and 96, and the study of their properties.
KeywordsFission Product Uranyl Nitrate Solubility Measurement Vitreous Silica Stable Oxidation State
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