Sulfide determination in hydrothermal seawater samples using a vibrating gold micro-wire electrode in conjunction with stripping chronopotentiometry

Type Article
Date 2012-11
Language English
Author(s) Aumond Virginie1, Waeles Mathieu1, Salaun Pascal2, Gibbon-Walsh Kristoff1, 2, 3, Van Den Berg Constant M. G.2, Sarradin Pierre-Marie4, Riso Ricardo D.1
Affiliation(s) 1 : Univ Bretagne Occidentale, IUEM, Lemur UMR CNRS 6539, F-29280 Plouzane, France.
2 : Univ Liverpool, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England.
3 : Univ Toulon & Var, RCMO PROTEE Lab, F-83957 La Garde, France.
4 : IFREMER, Inst Carnot EDROME, F-29280 Plouzane, France.
Source Analytica Chimica Acta (0003-2670) (Elsevier Science Bv), 2012-11 , Vol. 753 , P. 42-47
DOI 10.1016/j.aca.2012.09.044
WOS© Times Cited 10
Keyword(s) Sulfide, Stripping chronopotentiometry, Vibrating electrode, Gold, Seawater, Hydrothermal
Abstract A rapid electrochemical stripping chronopotentiometric procedure to determined sulfide in unaltered hydrothermal seawater samples is presented. Sulfide is deposited at -0.25 V (vs Ag/AgCl, KCl 3 M) at a vibrating gold microwire and then stripped through the application of a reductive constant current (typically -2 mu A). The hydrodynamic conditions are modulated by vibration allowing a short deposition step, which is shown here to be necessary to minimize H2S volatilization. The limit of detection (LOD) is 30 nM after a deposition step of 7s. This LOD is in the same range as the most sensitive cathodic voltammetric technique using a mercury drop electrode and is well below those reported previously for other electrodes capable of being implemented in situ. (C) 2012 Elsevier B.V. All rights reserved.
Full Text
File Pages Size Access
6 511 KB Access on demand
Author's final draft 22 642 KB Open access
Top of the page

How to cite 

Aumond Virginie, Waeles Mathieu, Salaun Pascal, Gibbon-Walsh Kristoff, Van Den Berg Constant M. G., Sarradin Pierre-Marie, Riso Ricardo D. (2012). Sulfide determination in hydrothermal seawater samples using a vibrating gold micro-wire electrode in conjunction with stripping chronopotentiometry. Analytica Chimica Acta, 753, 42-47. Publisher's official version : https://doi.org/10.1016/j.aca.2012.09.044 , Open Access version : https://archimer.ifremer.fr/doc/00111/22222/