Abstract

Amr Lotfy Saber*^1,2, Wael Abd-Allah Zordok^1,3, Ahmed Alharbi² and Abdu Subaihi³

DOI : http://dx.doi.org/10.13005/ojc/350217

A rapid, selective and sensitive method for the quantification of Pd (II) using spectrophotometric technique associated with Z-N'-(benzo(d) thiazol-2-yl)-N,N-dimethylformimidamide BTDF as new chelating agent is described. Yellow colored complex of Pd (II) with BTDF is formed in Britton-Robinson universal buffer of pH 9 and extracted with chloroform. The formed complex clearly illustrate an absorption at ∼384 nm and follw Beer’s law in the range of concentration between 0.5–18.0 µg ml⁻¹ of Pd (II) with absorbance of 3.62 × 10⁴ L mol^-1 cm^-1 and limit of detection(LOD) of Pd (II) 0.07 µg ml⁻¹. The effects of different experimental parameters have been established by study the optimum conditions for the extraction and quantification of palladium ion. Density functional theory (DFT) havealso been employed to computethe influence of the cation on theoretical parameters of Pd²⁺ complexes. The effect of donating centers was investigated theoretically which prove that Pd²⁺ favor coordinated with two molecules of Z-N'-(benzo(d)thiazol-2-yl)-N,N-dimethylformimidamide through two nitrogen atoms.The performance of the examined method was estimated to detect the impact of current method over the presented methods in the literature without interference effect of cations and anions. The examined method has successfully demonstrated the quantification of Pd(II) in natural and spiked water samples.

Dimethylformimidamide; DFT; Palladium Ion; Spectrophotometry

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