Neutron Activation and Radiochemical Determination of the Molybdenum, Chromium, and Iron Content of Individual Stainless Steel Microspheres.

NONFERROUS METALLURGY. II. Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum, and Tungsten

“…Neutron activation analysis is another technique which has been successfully Study of conditions and/or interferences (55, 133); V (12); Zr (89); steel (104); Na-V bronze (259); petroleum (13,61); graphite (206); rat liver (129); plant tissue (220); marine organisms (93); milk powder (189) Nb-Ta ( 136) W (93); Be (157); Zr (89); meteorites (77); sea water (107) Study of conditions and/or interferences (86, 261); Al (97); Be (157); ruber maser and laser crystals (280); steel (26, 101); silicon, silicon carbide, molybdenum sulfide (247); petroleum (61); poly phenyls (57); terphenyls (16); nucleic acids (262) Ge (260); SiCL (ISO); steel (26,101); polyphenyls (57); marine organisms ( 93) S1O2 (130); meteorites (11,77); steel (205); bone (27); marine organisms (93) applied to the determination of tantalum and, to some extent, of niobium. Corth (63) used activation analysis for the determination of tantalum in tungsten with no separation.…”

“…Gruverman and Henninger (101) utilized activation analysis to determine chromium in the analysis of a high-alloy steel and residues from electro-etching procedures. Benson and Gleit (26) determined the chromium content of stainless steel by means of activation analysis. Chromium was determined in beryllium by Laverlochere and May (157) by an activation analysis method following an ion exchange separation of the other impurities present.…”

“…Stary, Ruzicka, and Zeman (260) used an activation analysis method after separation of the molybdenum by precipitation with substoichiometric amounts of 8-quinolinol. The molybdenum content of stainless steel microspheres was determined by Benson and Gleit (26) using an activation analysis method.…”

Determination of the Density of Spherical Submicrogram Specimens by the Terminal Velocity Method.

“…Microspheres with diameters between 12 and 52 microns were selected. The diameters of the individual spheres were determined by microscopic measurements, as previously described (3). Conventional techniques were used to measure the viscosity of the liquid.…”