Determination of Potassium, Rubidium, and Barium in Their Tungsten Bronzes by Neutron and High Energy Photon Activation.

Abstract

The method of activation analysis has been applied to the determination of potassium, rubidium, and barium in their "tungsten bronzes," M.WOj (0 <x < 1) using three different irradiation techniques. In the case of potassium, synchrotron bremsstrahlung were used to produce the reactions K39 ( , ) 38 and W186 ( , ) 185, and the ratio of K38 to Ta185 activities was compared to that found in samples of known composition. Rubidium was determined

Photon activation analysis-review

“…In the case of an irregularly-shaped sample, an internal standard, utilizing an element whose amount in the sample is known, is useful. This has been used in the determination of carbon and oxygen in sodium (39, 56), and in the determination of potassium, gadolinium, and europium in their tungsten bronzes (82,90).…”

“…Element determined Matrix analyzed Arsenic (75) Alkali halides (78) Barium (76,77) Barium (95) Cadmium (76,77) Calcium (95) Chlorine ( Europium (82) Hafnium (100,101) Fluorine (79,83,84) Indium (85) Gadolinium ( 82) Iron (80,88,97) Gallium (85,86) Niobium ( 96) Germanium (87,88) Osmium (94) Indium ( 86) Plastics (76, 77,79) Iodine (78,83) Platinum (93) Lead ( 90) Thallium (86) Rare earths (91,92) Titanium (87) Rhenium (93) Tungsten (84) Rhodium (93) Tungsten bronzes (82,90) Ruthenium ( 94) Vanadium (98) Strontium ( 95) Zinc (81) Tantalum (96) Thallium (85,89)…”