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  • Author or Editor: C. Ramachandraiah x
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The reaction between uranium (VI) and o-hydroxypropiophenone isonicotinoyl hydrazone (OHPINH) has been investigated in HCl-sodium acetate buffers and a highly sensitive and simple procedure for the determination of uranium (VI) is suggested. The yellow colored complex showed maximum absorption at 380 nm in buffer solutions of pH 3. Beer's law is obeyed in the range of 0.47–17 g ml–1. The molar absorptivity and Sandell sensitivity are found to be 1.15×104 dm3 mol–1 cm–1 and 0.02 g cm–2, respectively. The composition of the complex is found to be 11 between metal and reagent.

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