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Ghoneim MM, Hassanein AM, Hammam E, et al. Simultaneous determination of Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe in water samples by differential pulse stripping voltammetry at a hanging mercury drop electrode. Fresenius J Anal Chem. 2000;367(4):378-83doi: 10.1007/s002160000410.
Ghoneim, M. M., Hassanein, A. M., Hammam, E., & Beltagi, A. M. (2000). Simultaneous determination of Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe in water samples by differential pulse stripping voltammetry at a hanging mercury drop electrode. Fresenius' journal of analytical chemistry, 367(4), 378-83. https://doi.org/10.1007/s002160000410
Ghoneim, M M, et al. "Simultaneous determination of Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe in water samples by differential pulse stripping voltammetry at a hanging mercury drop electrode." Fresenius' journal of analytical chemistry vol. 367,4 (2000): 378-83. doi: https://doi.org/10.1007/s002160000410
Ghoneim MM, Hassanein AM, Hammam E, Beltagi AM. Simultaneous determination of Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe in water samples by differential pulse stripping voltammetry at a hanging mercury drop electrode. Fresenius J Anal Chem. 2000 Jun;367(4):378-83. doi: 10.1007/s002160000410. PMID: 11225865.
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Fresenius J Anal Chem. 2000 Jun;367(4):378-83. doi: 10.1007/s002160000410.

Simultaneous determination of Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe in water samples by differential pulse stripping voltammetry at a hanging mercury drop electrode.

Fresenius' journal of analytical chemistry

M M Ghoneim, A M Hassanein, E Hammam, A M Beltagi

Affiliations

  1. Chemistry Department, Faculty of Science, Tanta University, Egypt. [email protected]

PMID: 11225865 DOI: 10.1007/s002160000410

Abstract

A highly sensitive and selective voltammetric procedure is described for the simultaneous determination of eleven elements (Cd, Pb, Cu, Sb, Bi, Se, Zn, Mn, Ni, Co and Fe) in water samples. Firstly, differential pulse anodic stripping voltammetry (DPASV) with a hanging mercury drop electrode (HMDE) is used for the direct simultaneous determination of Cd, Pb, Cu, Sb and Bi in 0.1 M HCI solution (pH = 1) containing 2 M NaCl. Then, differential pulse cathodic stripping voltammetry (DPCSV) is used for the determination of Se in the same solution. Zn is subsequently determined by DPASV after raising the pH of the same solution to pH 4. Next, the pH of the medium is raised to pH 8.5 by adding NH3/NH4Cl buffer solution for the determination of Mn by DPASV. Ni and Co are determined in the same solution by differential pulse adsorptive stripping voltammetry (DPAdSV) after adding DMG (1 x 10(-4) M). Finally, 1 x 10(-5) M 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) is added to the solution for the determination of Fe by DPAdSV. The optimal conditions are described. Relative standard deviations and relative errors are calculated for the eleven elements at three different concentration levels. The lower detection limits for the investigated elements range from 1.11 x 10(-10) to 1.05 x 10(-9)M, depending on the element determined. The proposed analysis scheme was applied for the determination of these eleven elements in some ground water samples.

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