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Monochloramine electrochemical determination in an aqueous system using newly fabricated gold and platinum microelectrodes was investigated to optimize sensor operation and to eliminate dissolved oxygen (DO) interference during monochloramine measurements. Carbon fiber microelectrodes were also compared for reference purposes. Gold and platinum microelectrodes exhibited no oxygen interference during...
Chloramine has replaced free chorine for secondary disinfection at many water utilities because of disinfection by-product (DBP) regulations. Because chloramination provides a source of ammonia, there is a potential for nitrification when using chloramines. Nitrification in drinking water distribution systems is undesirable and may result in degradation of water quality and subsequent non-compliance...
Chlorine microelectrodes with tip sizes of 5–15μm were fabricated, fully characterized and evaluated under various environmental conditions, and used to measure high spatial resolution monochloramine profiles in biofilm. The chlorine microelectrode showed response to total chlorine, including free chlorine, monochloramine, and dichloramine under various conditions. Where monochloramine dominates the...
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