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Determination of copper in seawater by adsorptive voltammetry with 1,2‐dihydroxyanthraquinone‐3‐sulfonic acid
Author(s) -
Quentel François,
Elleouet Catherine,
Madec Christian
Publication year - 1994
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140060812
Subject(s) - seawater , copper , chemistry , sulfonic acid , voltammetry , adsorption , inorganic chemistry , adsorptive stripping voltammetry , detection limit , stripping (fiber) , chelation , electrochemistry , chromatography , electrode , organic chemistry , materials science , oceanography , composite material , geology
A method is described for the determination of copper in seawater by adsorptive stripping voltammetry after accumulation of a 1,2‐dihydroxyanthraquinone‐3‐sulfonic acid (DASA) complex. The effects of various operational parameters (pH, ligand concentration, potential, and accumulation time) on the reduction current of the adsorbed chelate are discussed. A linear current concentration relationship was observed up to 5 × 10 −8 M. The detection limit is 0.3 nM.