The extraction and spectrophotometric determination of niobium with tetraphenylarsonium chloride

Affsprung, Harold E.; Robinson, Jack L.

doi:10.1016/s0003-2670(01)80641-3

Cited by 20 publications

(6 citation statements)

References 6 publications

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“…The niobium in steel was determined by using the thiocyanate complex in acetone solution (108), after extraction into tributyl phosphate (239), and after extraction into diethylether (425). Tetraphenylarsonium chloride forms a complex with niobium and thiocyanate which can be used for the determination of niobium in steel (11).…”

Section: Niobium and Tantalummentioning

confidence: 99%

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

Bachman¹,

Banks²

1969

Anal. Chem.

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HIS REVIEW, as did the previous two Alizarin red S: ceramic materials (387); alkali hydroxides (253); Zr-Ni alloys (692) Pyrocatechol violet: steel (733); HpSO4 solution (787, 799 Zirconin (Gallocyanine MS) : hlg, Al, Ni, Cu (613); Nb, Mo, Fe, Sn, Ti (516) Stilbazogall 11: study of complex (154): Me: (616) study of complex (515); Chromeaxurol S: stidy of cchditions'(302)-' Chloranilic acid: study of conditions (336) Methylthymol blue: study of complex (751) Chlorosulfophenol S: study of conditions (665) p-Chloromandelic acid: study of conditions (381 ); Phenylfluorone: Ta (628) Robinetin: study of conditions (355) Alberon: Cu (514) Thorin: study of conditions (658) n'-methylanabasine-a'-azoresorcinol : study of conditions N-methylanabasine-a'-azc-p-naphthol: study of condi-3',4',7,RTetrahydroxyflavonol: study of conditions Cyanoformazan-2: study of conditions (421) N-phenylbenzohydroxamic acid: Nb (688) Molybdosulfatozirconic acid: study of conditions (273) 3',4',5',6'-Tetrahydroxyfluoran: study of reactions (604) 1,l'-Dihydroxyazo dyes: study of reactions (394) Azo dyes: comparison of reagents (396) Review of spectrophotometric methods (286, 567, 646, H202: Ti (753); iron ore (163) Molybdovanadophosphate: study of conditions (386), Phosphovanadotungstate: A1 (388), TiC14 (754), coal Borax bead: study of method ( 5 ) 4-(2-Pyridylazo)-resorcinol: study of conditions and interferences (13, 131, 236, 358, 690), crude oil (697) 4-(2-Pyridylazo)-resorcinol-HzOz: study of complex (689) Xylenol orange: study of complex (14, 18, @I), water Methylthymol blue: study of complex (761); Ti (752) Chrome azurol S: study of complex and interferences VOL. 41, NO. 5, APRIL 1969 1 1 3 RTable 1. Spectrophotometric Methods (Cont'd.)Vanadium (Cont'd.) N-(o-tolyl)-benzohydroxamic acid: study of conditions Element Reagent: Material (References) and interferences (467); silirate rocks (332) Salicylhydroxamic acid: biological materials (428) N-Phenylcinnamohydroxamic acid: Fe, U (812) 'V-Phenyl-2-furohydroxamic acid: brines (583); steels N-Phenyl-p-phenylazobenzohydroxamic acid: study of Caprohydroxamic acid: study of conditions (602) Arsenazo I: stitdy of Conditions (457) Gossipol: study of conditions and interferences (363) hlorin: study of conditions and interferences (390) Ferron: ores (469) Azoxine S: study of conditions and interferences (261) Thenoyltrifliioroacetone: study of conditions (311) Cyanoformazan-2 : ore concentrate (819); heat-resistant Formazon : Ti concentrate (41 1 ) Srilfosalicyclic acid: study of conditions and interferences Salicylaldehyde: study of conditions and interferences Salicylaldehyde-anthranilic acid: steel (62) Nicotinic acid hydrazide: study of conditions (412) p-Anisidine: study of conditions and interferences 3-Hydroxyflavone: study of extractants (391) Pyridine-2,6-dicarboxylic acid-Ht02: study of conditions Element Reagent: Material (References) Niobium (Cont'd.) Tantalum Chromium Molybdoniobophosphate: NblO; (809); A1 (388); steel Chlorosulfophenol S: study of complex (115, 666) Cyanoformazan-2:...

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Section: Niobium and Tantalummentioning

confidence: 99%

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

Bachman¹,

Banks²

1969

Anal. Chem.

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“…Affsprung and Robinson (8) determined niobium by extraction of the tetraphenylarsonium thiocyanato-niobate into chloroform and measurement at 390 µ. Luke (402) and Canada (108) determined niobium with thiocyanate in the 380 µ region. Palladium was determined by Gupta and coworkers (252) with sodium p-(mercaptoacetamido)benzenesulfonate at 310 µ and by Ayres and Martin (33) by extraction of the glyoxime complex into chloroform and measurement at 397 µ. Clem and Huffman (133) determined nickel or palladium by extraction of their pyridine azides into chloroform and measurement in the 370 µ region.…”

Section: Inorganic Analysismentioning

confidence: 99%

Ultraviolet spectrometry

Crummett¹,

Hummel²

1968

Anal. Chem.

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“…The analysis of complicated minerals of niobium containing titanium, zirconium and tungsten is time-consuming [1][2][3][4] and requires high degrees of skill. The reliability of the results is rather poor, with many interferences.…”

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confidence: 99%

Extractive spectrophotometric determination of niobium(V) using 3-hydroxyflavone

Chhakkar

Kakkar

1995

Mikrochim Acta

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A simple, rapid method for the spectrophotometric determination of niobium in trace amounts is presented, employing 3-hydroxyflavone as a ligand for the complexation of the metal ion and extracting the coloured complex into chloroform from 4M HC10 4 solution. Beer's law is obeyed in the range 0.0 to 3.2 I.tg ml-1 Nb(V), with a lower working limit of 0.1 t~gml-1 Nb(V). Molar absorptivity and Sandell's sensitivity of the complex at 395 nm are 4.088 x 1041mol-lcm -1 and 0.002pg Nb(V) cm -2, respectively. The stoichiometry of the complex is established as 1:2 by Job's and mole ratio methods. The method is free from the interference of a large number of analytically important elements. The proposed system handles satisfactorily the analysis of several samples of varying complexity. The results are highly reproducible with a relative standard deviation of 0.34% for 20 btg of Nb.

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The extraction and spectrophotometric determination of niobium with tetraphenylarsonium chloride

Cited by 20 publications

References 6 publications

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

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

Ultraviolet spectrometry

Extractive spectrophotometric determination of niobium(V) using 3-hydroxyflavone

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