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:...
