A stripping chronopotentiometric (SCP) method with a gold film electrode for determining inorganic arsenic species in seawater - Université de Bretagne Occidentale Access content directly
Journal Articles Analytical and Bioanalytical Chemistry Year : 2007

A stripping chronopotentiometric (SCP) method with a gold film electrode for determining inorganic arsenic species in seawater

Abstract

An electrochemical method based on stripping chronopotentiometry (SCP) with a gold film electrode has been developed for determining arsenic in seawater. The detection limits were 0.053 ppb (0.71 nM) and 0.022 ppb (0.29 nM) for total inorganic As (As(T)) and As(III) after deposition times of 60 and 150 s, respectively. Compared to other stripping chronopotentiometric methods that use a gold macroelectrode to perform measurements of arsenic in seawater, the procedure described here exhibits better sensitivity and a fourfold shorter deposition time. Among the SCP methods, our procedure had proven its ability to analyse arsenic(III) in seawater. It therefore allows the concentrations of the various arsenic inorganic species in seawater—i.e. As(T), As(III) and As(V)—to be analysed. The proposed method is reliable, inexpensive and compact. It was successfully applied to the study of arsenic speciation along the salinity gradient of the Penzé estuary (NW France).
No file

Dates and versions

hal-00451347 , version 1 (28-01-2010)

Identifiers

  • HAL Id : hal-00451347 , version 1

Cite

Jennifer Vandenhecke, Matthieu Waeles, Ricardo D. Riso, Pierre Le Corre. A stripping chronopotentiometric (SCP) method with a gold film electrode for determining inorganic arsenic species in seawater. Analytical and Bioanalytical Chemistry, 2007, 388, pp.929. ⟨hal-00451347⟩
67 View
0 Download

Share

Gmail Facebook X LinkedIn More