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

Ghoneim, Mohammed M.; Hassanein, A. M.; Hammam, Essam; Beltagi, A. M.

doi:10.1007/s002160000410

Cited by 87 publications

(35 citation statements)

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“…For the speciation of Ni in aqueous solutions, adsorptive cathodic stripping voltammetry is frequently employed [38][39][40]. Using chromatographic methods both speciation and the separation of different metals in aqueous solutions is possible.…”

Section: Measurement Of Nickel In Environmental Samplesmentioning

confidence: 99%

Biogeochemistry of Nickel and Its Release into the Environment

Nieminen

Ukonmaanaho

Rausch

et al. 2007

Nickel and Its Surprising Impact in Nature

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Section: Measurement Of Nickel In Environmental Samplesmentioning

confidence: 99%

Biogeochemistry of Nickel and Its Release into the Environment

Nieminen

Ukonmaanaho

Rausch

et al. 2007

Nickel and Its Surprising Impact in Nature

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“…Indeed, the voltammetric response of antimony related to Sb(III) and Sb(V) exhibits a well-known dependence on the acidity conditions and chloride content of the supporting electrolyte. [32][33][34] The stripping signal of Sb(V) became observable at high hydrochloric acid concentrations (ca. 4 mol L -1 ), as well as by the proper setting of HCl-NaCl mixtures containing less concentrated hydrochloric acid solutions.…”

Section: Antimony Ph Gradient Dtpa and Chloride Concentrationmentioning

confidence: 99%

Sequential voltammetric determination of chromium, thallium, cadmium, lead, copper and antimony in saline hemodialysis concentrates using electrolyte pH gradient

Nascimento

Schneider

Bohrer

et al. 2011

J. Braz. Chem. Soc.

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A determinação sequencial de cromo, tálio, cádmio, chumbo, cobre e antimônio em concentrados polieletrolíticos para hemodiálise (DCs) é apresentada. Cromo foi determinado usando voltametria adsortiva de redissolução catódica e tálio, cádmio, chumbo, cobre e antimônio por meio de voltametria de redissolução anódica. O novo método desenvolvido para testar estas amostras se baseia no efeito do gradiente de pH do eletrólito na resposta voltamétrica. Os limites de detecção variaram de 0,03 mg L -1 para cádmio a 0,27 mg L -1 para cobre. Recuperações das amostras variaram de 92,0 a 117,5%. Este método foi aplicado para a análise de DCs comerciais, nos quais as concentrações encontradas dos analitos variaram de 0,16 mg L -1 para antimônio até 140,00 mg L -1 para cobre. Interferências e método de referência são discutidos.The sequential voltammetric determination of chromium, thallium, cadmium, lead, copper and antimony in dialysate concentrates (DCs), is presented herein. Chromium was quantified by adsorptive cathodic stripping voltammetry and thallium, cadmium, lead, copper and antimony were assayed by anodic stripping voltammetry. The novel method developed to test these samples exploits the effect of electrolyte pH gradient on voltammetric response. The limits of detection (LOD) ranged from 0.03 mg L -1 for cadmium to 0.27 mg L -1 for copper. Recoveries from spiked samples were 92.0-117.5%. This method was applied to the analysis of commercial DCs, where the investigated metals were found in some samples at concentrations between 0.16 mg L -1 for antimony and 140.00 mg L -1 for copper. Interferences and the reference method are discussed.

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“…[2][3][4] Commonly, mercury-based electrodes are used as working electrodes due to their ability to form amalgams, allowing for preconcentration of the heavy metal ions prior to their determination by voltammetric stripping methods. 2,[5][6][7][8] However, in recent years, the potential dangers associated with mercury have brought about a growing interest in the use of environmentally-friendly, mercury-free electrodes. 9,10 Glassy carbon is a kind of ideal material for working electrode as the result of its intrinsic advantages: low ohmic resistance, chemical and electrochemical inertness over a broad range of potentials, high hydrogen and oxygen overvoltage resulting in a wide potential window, low residual current, ease of reproduction of the surface, maximum versatility, low cost and no toxicity.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode

Zhang

Shao-sai

Cui

et al. 2011

J Chinese Chemical Soc

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We herein report a mercury-free approach for the sensitive determination of trace Pb 2+ in seawater using differential pulse stripping voltammetric (DPSV) method with a novel columnar glassy carbon electrode (CGCE). Compared with the conventional disk glassy carbon electrode with the same diameter, it has much larger electrochemical area (0.627 ± 0.003 cm 2 ). The CGCE shows good accumulation ability and consequently acceptable behavior which makes it suitable as a working electrode in the DPSV determination of Pb 2+ with the great advantage of the avoidance of harmful mercury. Using acidified artificial seawater as supporting electrolyte, there was a good linear relationship between the peak currents and the concentration of Pb 2+ in the range of 0.6~140.0 mg L -1 with a detection limit of 0.3 µg/L (S/N = 3) when the accumulation time was 300 s. The method was employed to determine trace levels of Pb 2+ in real seawater samples successfully.

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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

Cited by 87 publications

References 0 publications

Biogeochemistry of Nickel and Its Release into the Environment

Biogeochemistry of Nickel and Its Release into the Environment

Sequential voltammetric determination of chromium, thallium, cadmium, lead, copper and antimony in saline hemodialysis concentrates using electrolyte pH gradient

Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode

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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

Cited by 87 publications

References 0 publications

Biogeochemistry of Nickel and Its Release into the Environment

Biogeochemistry of Nickel and Its Release into the Environment

Sequential voltammetric determination of chromium, thallium, cadmium, lead, copper and antimony in saline hemodialysis concentrates using electrolyte pH gradient

Sensitive Determination of Trace Pb2+ in Seawater Using Columnar Glassy Carbon Electrode

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Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode