Separation and extractive spectrophotometric determination of palladium(II) with 5-methyl- 2,3-hexanedione dioxime

Abstract

5-Methyl-2, 3-hexanedione dioxime (H₂MHDDO) is proposed as a new sensitive analytical reagent for the separation and extractive spectrophotometric determination of trace amounts of palladium(II). The reagent reacts with paliadium(II) in the <i>p</i>H range 0.5-1.5 to form a yellow co loured 1:2 chelate which is very well extracted in chloroform . Beer's law is obeyed in the concentration range 0.5-9.0 μg ml^-1 of palladium. The molar absorptivity of the extracted species is 3.894×10³l mol^-l cm^-1 at <i>λ</i> 379 nm. The proposed method is highly sensitive, simple, rapid and accurate and has been satisfactorily applied for the

determination of palladium in synthetic mixtures, alloy, ore and catalysts.