Spectrophotometric determination of zirconium with 2-(1-hydroxy-4,6-dinitro-2-phenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (picramine ca) as chromogenic reagent

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

“…Another combined reagent which proved to be useful for the determination of zirconium was a mixture of glycine and cresol red (630). Two compounds which were found to be useful as chromogenic reagents for zirconium were picramine CA (220) and picraminazo H (122). Another study found picraminazochrome and picraminazo H to be the most satisfactory of six , '-dihydi'oxyazo compounds studied (101).…”

“…The phenylfluorone method was successfully used for the determination of small amounts of tantalum in lithium and potassium metal (65) while the method in which pyrocatechol is the chromogenic reagent was used for the differential spectrophotometric determination of tantalum in alkali metal tantalates (596). A number of chromogenic reagents react with the tantalum Xylenol Orange, Arsenazo III, Zirconin: comparison of reagents (452) Stilbazogall-1, Stilbazogall-2, Arsenazo III, and others: comparison of reagents (121, 520) 4.5-Dihydroxy-3 [ (2-hydroxy-3,5 -dinitrophenol)azo] -2,7 -naphthalenedisulfonic acid, Xylenol Orange, Arsenazo III: comparison of reagents (697) Xylenol Orange: Ni (115); Ti (483); Nb (180); silicate minerals (612); with solvent extraction separation (16); study of reactions (507); study of complex (350) Arsenazo III: U (667); heat-resistant alloys (151); silicates (617); tourmaline (425); study of conditions (482) Alizarin Red S: rutile (607); study of conditions (271) Pyrocatechol Violet : in butyl alcohol (162) Pyrocatechol Violet + Acid Chrome Violet K: Mg-Be (601) Pyrocatechol Violet -f-EDTA: study of complex (399) Glycine + Cresol Red: study of conditions and interferences (630) Picramine CA: study of complex (220) Picraminazo H: study of conditions and interferences (122) Picraminazochrome, Picraminozo : comparison of reagents (101) Methylthymol Blue: Nb (416) Morin: Ft (201) Zirconin: study of conditions and interferences (453) 1-(2-Pyridylazo)-2-naphthol: U (538) Light Fast 3 BL: Cu (577) Kaempferol: study of conditions and interferences (197) Solochrome Black T: study of conditions and interferences (595) Sulfochlorophenol S: study of reactions (555) Bromopyrogallol Red: study of conditions (546) 1.5-Bis(2-hydroxy-5-sulfophenyl)-3-cyanoformazan: study of conditions (326) 3,5,6,7,3',4'-Hexahydroxyflavone: study of c...…”

Determination of zirconium in water, dental materials and artificial saliva after surfactant assisted dispersive ionic liquid based microextraction

“…Among the methods, UV visible spectrophotometry is the simplest choice, and with adequate chromogenic reagents, highly sensitive and accurate results can be obtained. There are some organicreagents for UV vis spectrophotometric determination of zirconium: xipamide, 3 5,7dibromo-8-hydroxyquinolinein, 12 eriochrome cyanine R, 13 2-(5bromo-2-pyridylazo)-5-(diethylamino) phenol, 14 neothoron, 15 2-(1-hydroxy-4,6-dinitro-2-phenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (picramine ca), 16 xynelol orange, 17,18 8-hydroxyquinoline, 19 2,2 0 ,3,4-tetrahydroxy-3 0 -sulpho-5 0 -carboxyazobenzene (tetrahydroxyazon SC), 20 4-(2-pyridylazo)-resorcinol, 21 Chrome Azurol S (CAS). 22 Spectrophotometric determinations are a good preference due to their simplicity, easy operation and low operation cost.…”