Determination of Oxygen in Mixed Fluorides by Inert Gas Fusion.

Inert Gas Fusion Determination of Oxygen in Vanadium, Niobium, and Tantalum.

“…These methods are very useful because of the small amount of substance required, but are rather delicate (2)(3)(4)(5)(6)(7).…”

“…Since the availability of commercial instrumentation, it lias become increasingly popular. Much of the original work dealt with the determination of oxygen in steels, but in the recent literature the technique has been applied to beryllium (4), zirconium and zircaloy (8), yttrium and yttrium fluoride (1), and mixed fluorides (5). Beck and Clark (2) have used the graphite capsule method for determining oxygen in various oxides and in organic compounds.…”

Determination of Oxygen in Pyrolytic Graphite-Coated Uranium Carbide by Use of a Current-Concentrator Furnace.

“…This technique differs in principle from that commonly used to heat crucibles in many vacuum fusion and inert-gas fusion furnaces in which high temperatures are attained by surrounding the crucible with carbon insulation contained in a quartz thimble. As the furnaces with concentrators do not contain hot carbon in contact with quartz, high blanks due to the reduction of the silica at high temperature (7) are not encountered.…”