SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) IN NATURAL WATERS, VITAMINS AND CERTIFIED STEEL SCRAP SAMPLES USING ACETOPHENONE-P-CHLOROPHENYLTHIOSEMICARBAZONE

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GHAZI S.E.; EL-SHAZLY R.M.; AL-HAZMI G.A.A.; EL-ASMY A.A.; EL-SHAHAWI M.S.

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Paper Information

Journal: JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS) Year:2006 | Volume:3 | Issue:2 Page(s): 140-150

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Title

SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) IN NATURAL WATERS, VITAMINS AND CERTIFIED STEEL SCRAP SAMPLES USING ACETOPHENONE-P-CHLOROPHENYLTHIOSEMICARBAZONE

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Keywords

COPPER

SPECTROPHOTOMETRY

FLOTATION

NATURAL WATERS

VITAMINS

CERTIFIED SAMPLES

Abstract

A very simple, highly sensitive and selective spectrophotometric procedure was developed for the determination of copper(II). It is based on the reaction at pH 4-9 between the synthesized acetophenone-p-chlorophenylthiosemicarbazone (A-p-ClPT) and Cu(II) forming a green complex, Cu(II):A-p-ClPT (1:2), that floats quantitatively with oleic acid (HOL) surfactant. It exhibits a constant and maximum absorbance at 600 nm in both aqueous and surfactant layers. Beer’s law is obeyed over the concentration range 0.25-6.35 mg l-1 with a detection limit of 0.021 mg l-1 for a standard aqueous solution of Cu(II) with a concentration of 3.82 mg l-1 (calculated on the basis of 3s) and molar absorptivities of 5.5 × 103 and 1.3 × 104 mol l-1 cm-1 in aqueous and surfactant layers, respectively. Sandell’s sensitivity was calculated to be 0.244 µg cm-2 and the relative standard deviation (n = 9) was 0.19%. The different analytical parameters affecting the flotation and determination processes were examined. The proposed procedure has been successfully applied to the analysis of Cu(II) in natural waters, certified scrap steel samples and vitamin samples. The results obtained agree well with those samples analyzed by atomic absorption spectrometry (AAS). Moreover, the flotation mechanism is suggested based on some physical and chemical studies on the solid complexes isolated from aqueous and surfactant layers.

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APA: Copy

GHAZI, S.E., EL-SHAZLY, R.M., AL-HAZMI, G.A.A., EL-ASMY, A.A., & EL-SHAHAWI, M.S.. (2006). SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) IN NATURAL WATERS, VITAMINS AND CERTIFIED STEEL SCRAP SAMPLES USING ACETOPHENONE-P-CHLOROPHENYLTHIOSEMICARBAZONE. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), 3(2), 140-150. SID. https://sid.ir/paper/282081/en

Vancouver: Copy

GHAZI S.E., EL-SHAZLY R.M., AL-HAZMI G.A.A., EL-ASMY A.A., EL-SHAHAWI M.S.. SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) IN NATURAL WATERS, VITAMINS AND CERTIFIED STEEL SCRAP SAMPLES USING ACETOPHENONE-P-CHLOROPHENYLTHIOSEMICARBAZONE. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)[Internet]. 2006;3(2):140-150. Available from: https://sid.ir/paper/282081/en

IEEE: Copy

S.E. GHAZI, R.M. EL-SHAZLY, G.A.A. AL-HAZMI, A.A. EL-ASMY, and M.S. EL-SHAHAWI, “SPECTROPHOTOMETRIC DETERMINATION OF COPPER(II) IN NATURAL WATERS, VITAMINS AND CERTIFIED STEEL SCRAP SAMPLES USING ACETOPHENONE-P-CHLOROPHENYLTHIOSEMICARBAZONE,” JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS), vol. 3, no. 2, pp. 140–150, 2006, [Online]. Available: https://sid.ir/paper/282081/en

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