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Subject = Interdigitated array;
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Electrochemical detection of free-chlorine in Water samples facilitated by in-situ pH control using interdigitated microelectrodes
(2020)
Seymour, Ian P.; O'Sullivan, Benjamin; Lovera, Pierre; Rohan, James F.; O'Rio...
Electrochemical detection of free-chlorine in Water samples facilitated by in-situ pH control using interdigitated microelectrodes
(2020)
Seymour, Ian P.; O'Sullivan, Benjamin; Lovera, Pierre; Rohan, James F.; O'Riordan, Alan
Abstract:
Residual free-chlorine concentration in water supplies is a key metric studied to ensure disinfection. High residual chlorine concentrations lead to unpleasant odours and tastes, while low concentrations may lead to inadequate disinfection. The concentration is most commonly monitored using colorimetric techniques which require additional reagents. Electrochemical analysis offers the possibility for in-line analysis without the need for additional reagents. Electrochemical-based detection of chlorine is influenced by the solution pH, which defines the particular chlorine ionic species present in solution. As such, controlling the pH is essential to enable electrochemical based detection of residual chlorine in water. To this end, we explore the application of solid state interdigitated electrodes to tailor the in-situ pH of a solution while simultaneously detecting free-chlorine. Finite element simulations and subsequent electrochemical characterization, using gold interdigitated mi...
http://hdl.handle.net/10468/10541
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