A Mercury‐Free Sensor to Control Trace Metal Ionization Used to Treat Pathogens in Water Distribution Systems

Abstract

The specific aim of this work was the development of an electroanalytical method, based on a mercury‐free sensor, for the determination of silver(I) and copper(II) used to treat pathogens in water distribution systems. Analysis of the two metals was performed in 0.1 M ammonia solution pH 9.0 using Square Wave Anodic Stripping Voltammetry (SWASV). The proposed method is based on the determination of copper, the addition of a masking agent (EDTA) to the solution and afterwards the determination of silver. A detection limit of 23 µg/L and 6 µg/L for 60 s of deposition time was obtained for copper and silver, respectively. Analysis of water samples was also reported.

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

“…Many pioneering researchers coming from several countries have initiated and intensified works dealing with electrochemical techniques for heavy metals detection and assay in natural media: Jaroslav Heyrovsky (Czechoslovakia) (Heyrovsky, 1960 ), Joseph Wang (USA) (Wang et al, 1995 ), Richard G. Compton (UK) (Agra-Gutierrez and Compton, 1998 ), George Luther III (USA) (Luther III and Ferdelman, 1993 ), Laura Sigg (Switzerland) (Goncalves et al, 1985 ), Arben Merkoçi (Spain) (Aragay and Merkoçi, 2012 ), Marco Mascini (Italy) (Voccia et al, 2012 ), and so on. French contribution to this topic is also noticeable.…”