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- Title
Sensitive method of determination of gold (III) using diacetyl monoxime isonicotinoyl hydrazone (DMIH).
- Authors
Chandrasekhar Reddy, Gadikota; Devanna, N.; Chandrasekhar, K. B.
- Abstract
Gold (III) forms a yellow coloured water soluble complex with diacetyl monoxime isonicotinoyl hydrazone (DMIH) reagent in acidic buffer pH 4.5 with λmax at 361 nm. The molar absorptivity and Sandell's sensitivity are 1.50X104 L.mol -1.cm-1 and 0.00333 μg/cm², respectively .The Beer's law validity range is 0.985–11.82 μg/mL. The optimum concentration range is 1.97-9.85 μg/mL. Gold (III) forms (M:L) 1:1 complex with DMIH and stability constant of the complex is 3.263X106. The derivative spectrophotometric determination of Au (III) was carried out by measuring peak height method. The developed derivative spectrophotometric method was employed for the determination of gold (III) in synthetic alloy samples. The effect of various diverse ions was also studied.
- Subjects
GOLD alloy analysis; DIACETYLMONOXIME; HYDRAZONE derivatives; ION analysis; SPECTROPHOTOMETRY; BEER-Lambert law
- Publication
Orbital: The Electronic Journal of Chemistry, 2011, Vol 3, Issue 3, p125
- ISSN
1984-6428
- Publication type
Article