Determination of Silver, Cadmium, Indium, Tantalum, Rhenium, Gold, and Rare Earths at Low Concentration by Neutron Activation and Radiochemical Analysis.

Nonferrous metallurgy. II. Zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, and tungsten

“…Laverlochere (288) discussed neutron activation analysis and included 67 references. Neutron activation analysis was used by Verbeek (566) for the determination of niobium in steel following an extraction with methyl isobutyl ketone; by Dugain and Laverlochere (125) for tantalum in niobium with and without separation; by Simkova (501) for tantalum in iron and niobium; by Gleit et al (168) for tantalum in filter media and high purity quartz; by Ricq, Capitant, and Troly (445) for niobium and tantalum in rocks and minerals following an extraction with methyfisobutyl ketone; by Schlitz and Coquema (472) in rocks and min-erals following a separation by paper chromatography; by Gebauhr and Martin (157) for tantalum in high purity silicon; by Szabo (538) for the determination of tantalum in rocks; and by Ricq et al (446) for niobium and tantalum in rocks and minerals.…”

“…Following ion exchange (203); comparison of methods (68); Ti (547); Hf (84); Nb (65, 66); heat-resistant alloys (80); steel (159, SOI); TJF4 (409); B (548); rocks (208, 512); ashes and ores (537); rubber polymers (283) Following ion exchange (203); Hf ( 84 Steel and U (549); U (185); rocks (78,136) Zr (411,433) With portable source (235); organic materials (128) NbsSn (39) Minerals and ores (228,285,373) Nb (555) With a portable source (235); Ni-Cr films (516); Sn plate (513); ferrochrome (150) Comparison of methods (293); study of conditions (569); U (185,391) Ni (25) Element Study of method (165); Zr (333); ZrOs (166, 178); A1 (249); rocks (78,538) Determination of sensitivities (600); study of separations (517); Zr (333); A1 (248) Steel (566); nuclear materials (288) Determination of sensitivities (600); rocks and minerals (445,446) Nb (125); Fe, Nb (501); Si (157); rocks (472, 538); organic filters (168) Determination of sensitivities (600); study of separations (517); study of method (165); A1 (249, 609); Si (157); biological material (56) Determination of sensitivities…”

Development of a highly selective cell-permeable ratiometric fluorescent chemosensor for oxorhenium(v) ion

“…30 The main type of rhenium complexes labeled with b-emitting isotopes 186 Re/ 188 Re used in nuclear medicine for systematic radiotherapy of abnormal tissues or in the treatment of cancer 31,32 is oxorhenium(V); 33 and though rhenium is not a biometal, as an element in the periodic group next to that of molybdenum and tungsten, transfer reactions involving Re¼O are of value as potential models. 34 But the method for the determination of rhenium is rare 35,36 and specifically the detection technique for oxorhenium(V) ion is still unexplored. To our best knowledge, ratiometric amplified chemosensor for the detection of ReO(V) ion is not established.…”

Letter to the editor

“…The question of ashing temperature also has been discussed (8). In this study, the remote infrared pyrometrie method was first employed.…”

“…Other published accounts of the use of this technique in applied analyses may be of interest. These include reports related to the retention of selenium in biological material (7), studies of trace elements in filter media (8), particle recovery (9), and ashing of bituminous coal (10). Several investigators have employed this type of apparatus for studies of thin specimens of particle collection media and thin biological samples.…”