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Determination of sub-micromolar amounts of sulfide by standard free anodic stripping voltammetry and anodic stripping voltammetric titration.

https://arctichealth.org/en/permalink/ahliterature95073
Source
Anal Chim Acta. 2009 Oct 27;653(2):154-60
Publication Type
Article
Date
Oct-27-2009
Author
Titova T V
Borisova N S
Zakharchuk N F
Author Affiliation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Avenue, Novosibirsk 630090, Russian Federation.
Source
Anal Chim Acta. 2009 Oct 27;653(2):154-60
Date
Oct-27-2009
Language
English
Publication Type
Article
Abstract
A novel electrochemical methods namely standard free anodic stripping voltammetry and anodic stripping voltammetric titration are proposed for determination of dissolved sulfide concentration. 2Ag(+) + S(2-) --> Ag(2)S reaction is used to provide the information. The anodic stripping voltammetric response of unreacted silver-ions at the glassy carbon electrode is used as analytical signal. Results reliability and accuracy are confirmed by analysis of model solutions, spiked natural and tap waters and recovery study, with a recovery of 100 +/- 5% (n=7) obtained. The approaches show the detection limit (3sigma(blank)) of 2-5x10(-10) mol L(-1) and the relative standard deviation of 2-5% for repeated measurements.
PubMed ID
19808107 View in PubMed
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