Molybdenum-hydroxylamine complexes. IV

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

“…4-(2-Pyridylazo)resorcinol and hydroxylamine: study of conditions (374); W (372); Re (373) Phenylfluorone: Cu, Bi (94); W (95); study of conditions (243) 0-Nitrophenylfluorone: soils (163) Phenylnydrazine: air (661); W ( 712 Pyrocatechol: molybdenites (34) Pyrocatechol and papaverine: study of conditions (624) Catechol and collidine: study of conditions (488) Aromatic 1,2-and 1,2,3-hydroxy compounds: study of reagents (620) 3-Hydroxy-l,3-diphenyltriazine: study of conditions (138) Salicylaldoxime: study of conditions (536) 2,5-Dihydroxyacetophenone oxime: study of conditions (236) Dithiovanillic acid: study of conditions (543) Benzohydroxamic acid, salicylhydroxamic acid: study of conditions (15) Chrome Azurol S: study of conditions (260) Alizarin Red S: study of conditions (270) Saturn Violet URL: study of conditions (481) Perron: study of conditions (528) Magneson: W (167) Sulfochlorophenol S: study of conditions (555) Several hydroxycoumarins: comparison of reagents (309) Stilbazogall-1: study of conditions (520) 1,1'-(2,2 '-Disulfo-4,4'-biphenylylene)bis (3 -hydroxy -3 -phenyltriazene): study of conditions (354) 2,2',4'-Trihydroxy-3-arsono-5-chloroazobenzene: study of conditions (398) Benzoylacetanilide: steel (549) [4 -(Dimethylamino)phenyl] [4 -(benzylmethylamino)phenyl]antipyrinylcarbinol: study of conditions (708) 2-[ «-(Diethylamino )isopropyl] -4-hydroxydihydro-3 (2 H )furanone: study of conditions (232) Diphenylthiocarbazone: Cu, Ni, Zn, alloys (386) KI-H202: NaCl (28); geological and biological materials (187) KI-NaBOj: medicinal tinctures (492); study of conditions (634) Rubeanic acid-H202: study of conditions (490) Malachite green-Ti(III): study of conditions (471)…”

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

“…@-Colubrine was found to be a suitable indicator for the titration of molybdenum(V) with either ceriurn(1V) or potassium dichromate (664). Cerium(1V) was used as the titrant for the determination of molybdeiiu m in [ Mo (VI) O&lo (V) 0 2 1Fe- corrosive media (670); Zr minerals ( 1 ) ; Nb (265); rocks, minerals, sands (233,281,297,792) Zr (459); ZrOl (221); Zr minerals ( 1 ) Be (139); steel (196); sulfate solutions (175); corrosive media (670); zeolites (278) ; Polyolefins (212); Petroleum ( 6 4 ) Niobium and tantalum W, 310, Re (438); hard metals (440,586); metal powders (224); Talob, KblO, (405) Niobium Tantalum Chromium Molybdenum Tungsten Ores and concentrates (727); minerals (128); corrosive Nb (255); Ag (282); steel (110) Theoretical calculations (693); metallurgical samples (165); zircaloy-2 (522); Be (139); Fe, Ni (283); U (223); steel (6, 110,196,267,359); ion-exchange papers (132); zeolites (278); oil (284) Stitdy of high precision technique (137); U (223); titanium carbide (790); steel (6, 110,196); Nb (255); hard metals and high melting metals (438,440); ore concentrates ( 8 0 ) ; ores and rocks (238, 466); ore, concentrate, oxide, scrap (439) ; powder-like products (780); solutions …”

“…Research was reported which led to methods for the determination of tungsten in steel, nickel-tungsten, and nickel-chromiumtungsten alloys by X-ray fluorescence (196). The tungsten was determined in ores, concentrates, and scrap by X-ray fluorescence following removal of copper, iron, titanium, niobium, and tantalum (439). The tungsten was determined in ores, concentrates, and scrap by X-ray fluorescence following removal of copper, iron, titanium, niobium, and tantalum (439).…”

“…The detection limits of several elements in steel were determined for the electron microprobe (76). Procedures for the use of ß-ray back-scattering for the determination of chromium in metallurgical raw materials, 126 Hf (459); Ni, S (185); high-melting metals (440); corrosive media (670); Zr minerals (1); Nb (255); rocks, minerals, sands (233,281,297,792) Hafnium Zr (459); Zr02 (221); Zr minerals (1) Vanadium Be (139); steel (196); sidfate solutions (175); corrosive media (670); zeolites (278); polyolefins (212); petroleum (64) Niobium and tantalum W, Mo, Re (438); hard metals (440, 586); metal powders (224); TaA, Nb205 (405) Niobium Ores and concentrates (727); minerals (128); corrosive media (670) Tantalum Nb (255); Ag (282); steel (110) Chromium Theoretical calculations (693); metallurgical samples (165); zircaloy-2 (522); Be (139); Fe, Ni ( 440); ore concentrates (80); ores and rocks (238, 466); ore, concentrate, oxide, scrap (439); powder-like products (780); solutions (462) Tungsten Nb (255); steel, Ni, Cr (196); hard metals (438, 440); ore, concentrate, scrap (439); boric acid (447)…”

“…The determination of several metals including tungsten in hard metals by X-ray fluorescence was compared to the determination by wet chemical methods with regard to accuracy, precision, time, and cost (438). The tungsten was determined in ores, concentrates, and scrap by X-ray fluorescence following removal of copper, iron, titanium, niobium, and tantalum (439). Procedures were recommended for the analysis of binary alloys containing tungsten and either copper, molybdenum, rhenium, or tantalum (440).…”