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Calibrationless determination of cadmium, lead and copper in rain samples by stripping voltammetry at mercury microelectrodes: effect of natural convection on the deposition step

Calibrationless determination of cadmium, lead and copper in rain samples by stripping voltammetry at mercury microelectrodes: effect of natural convection on the deposition step
Calibrationless determination of cadmium, lead and copper in rain samples by stripping voltammetry at mercury microelectrodes: effect of natural convection on the deposition step
Mercury microelectrodes were prepared by ex situ deposition of Hg onto Pt microdises. By exploiting the known properties of microelectrodes in stripping analysis, an absolute method based on a simple equation derived from the stripping charge and the microelectrode steady-state current was assessed for the simultaneous quantification of Cd2+, Pb2+ and Cu2+ concentrations. The method was tested with synthetic solutions containing known amounts of Cd2+, Pb2+ and Cu2+. Then, it was used to determine the labile and total fractions of these metal ions in rain samples. The labile fractions were measured from samples at their natural pH while the total concentrations were determined from samples at pH = 2.
anodic stripping voltammetry, mercury microelectrodes, heavy metals, rain, waterheavy-metals, real samples, electrodes, wine
0003-2670
65-75
Abdelsalam, Mamdouh Elsayed
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Denuault, Guy
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Daniele, Salvatore
cd677266-5cc2-48c2-8145-e95861a0b4d2
Abdelsalam, Mamdouh Elsayed
d1cbddcb-9f5c-46d5-b774-1bbaee26e115
Denuault, Guy
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Daniele, Salvatore
cd677266-5cc2-48c2-8145-e95861a0b4d2

Abdelsalam, Mamdouh Elsayed, Denuault, Guy and Daniele, Salvatore (2002) Calibrationless determination of cadmium, lead and copper in rain samples by stripping voltammetry at mercury microelectrodes: effect of natural convection on the deposition step. Analytica Chimica Acta, 452 (1), 65-75. (doi:10.1016/S0003-2670(01)01434-9).

Record type: Article

Abstract

Mercury microelectrodes were prepared by ex situ deposition of Hg onto Pt microdises. By exploiting the known properties of microelectrodes in stripping analysis, an absolute method based on a simple equation derived from the stripping charge and the microelectrode steady-state current was assessed for the simultaneous quantification of Cd2+, Pb2+ and Cu2+ concentrations. The method was tested with synthetic solutions containing known amounts of Cd2+, Pb2+ and Cu2+. Then, it was used to determine the labile and total fractions of these metal ions in rain samples. The labile fractions were measured from samples at their natural pH while the total concentrations were determined from samples at pH = 2.

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More information

Published date: 31 January 2002
Keywords: anodic stripping voltammetry, mercury microelectrodes, heavy metals, rain, waterheavy-metals, real samples, electrodes, wine

Identifiers

Local EPrints ID: 19649
URI: http://eprints.soton.ac.uk/id/eprint/19649
ISSN: 0003-2670
PURE UUID: 2317aff6-8255-44fa-a313-d3e7a7ac2e03
ORCID for Guy Denuault: ORCID iD orcid.org/0000-0002-8630-9492

Catalogue record

Date deposited: 15 Feb 2006
Last modified: 07 Oct 2020 01:36

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