Determination of Uranium (VI) in Underground Water and Rock Samples by Adsorptive Cathodic Stripping Voltammetry
Mahmoud A. Ghandour1, Hassan Sedaira2, Azza M. M. Ali3, Mohmed M. A. Mansour4
1Mahmoud A. Ghandour, Department of Chemistry, Faculty of Science, Assiut University, Assiut-71516, Egypt.
2Hassan Sedaira, Department of Chemistry, Faculty of Science, Assiut University, Assiut-71516, Egypt.
3Azza M. M. Ali, Department of Chemistry, Faculty of Science, Assiut University, Assiut-71516, Egypt.
4Dr. Mohmed M. A. Mansour, Lecturer, Department of Chemistry, Faculty of Science, Sirte University – Libya.
Manuscript received on June 01, 2015. | Revised Version Manuscript Received on June 17, 2015. | Manuscript published on June 20, 2015. | PP: 5-10 | Volume-1 Issue-7, June 2015
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© The Authors. Published by Lattice Science Publication (LSP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Uranium (VI) forms a complex with potassium hydrogen phthalate. This complex is adsorbed onto a hanging mercury drop electrode (HMDE) and uranium is determined by differential pulse cathodic stripping voltammetry (DPCSV). This method is applied for the determination of U (VI) in 10 rock samples and 15 underground water samples. The reduction current of adsorbed complex of uranium (VI) was measured by differential pulse cathodic stripping voltammetry (DPCSV), preceded by a period of accumulation onto the electrode surface. Concentration of U(VI) found were ranged from: nil ــ 3.34µgL-1in ground water samples and 0.167 – 3.637 mgkg-1 in rock samples. The statistical parameters (standard deviation, correlation coefficients, for estimation and confidence interval for standard deviations) are made by linear regression method. The values reveal the accuracy and reliability of the proposed method for monitoring of U(VI) in underground water and rock samples.
Keywords: Differential pulse cathodic adsorptive stripping voltammetry, Uranium, Uranium (VI), rocks, underground ground water samples.