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- W2365547301 abstract "Three antipyrinylazo compounds,7-(4-antipyrinylazo)-8-hdroxyquinoline,antipyrinylazo salicylaldehyde and 5-antipyrinylazo salicylfluorone,were synthesized and characterized by IR and 1 H NMR spectroscopy.Some chromogenic reactions of three metal ions,niobium,zirconium and vanadium,with them were studied.A new method was proposed to determine vanadium ions by forming a stable orange red complex through their interaction with 7-(4-antipyrinylazo)-8-hdroxyquinoline at room temperature and in the presence of HAc-NH4Ac buffer solution at pH=6.8.The complex gave a maximum absorption atλ=480nm with a molar absorptivity coefficient of 3.17×104L/(mol·cm),and the Beer′s law was obeyed in the range 0~30μg in the solution of 25mL for vanadium." @default.
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- W2365547301 date "2013-01-01" @default.
- W2365547301 modified "2023-09-24" @default.
- W2365547301 title "Synthesis of Three Antipyrinylazo Compounds and Their Color Reaction with Metals" @default.
- W2365547301 hasPublicationYear "2013" @default.
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