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- [3] INTERACTION OF IRON(II) AND THE SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF FE, CU, ZN, CO AND NI WITH 2-(5-BROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1992, 343 (03): : 274 - 279
- [6] DETERMINATION OF TITANIUM BY ADSORPTION-VOLTAMMETRY WITH 2-(5-BROMO-2-PYRIDYLAZO)-5-(DIETHYLAMINO)-PHENOL (5-BR-PADAP) FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1990, 338 (08): : 905 - 907