Abstract

Nitinkumar B. Patel and Nirav Hiteshkumar Parekh

Cu(II) was determined spectrophotometrically after co-precipitation with 2, 4 Dihydroxy-5-bromo[2’-methyl] propiophenone oxime (DHBMPO) at room temperature. Obeyance of Beer’s law was found and from that Molar absorptivity and Sandell’s sensitivity were calculated. Composition of chelate was determined using Job’s method of continuous variation and Yoe and Jones mole ratio method. The stability constant and Gibb’s free energy change were also determined spectrophotometrically. From TGA, the energy of activation was also calculated using Broido method for the first and second step decomposition. The reagent has been satisfactorily applied for the determination of copper in drain micro etch solution.

Propiophenone oxime; DHBMPO; Chelate

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