Full Description

A monochloramine microelectrode with a tip size between 5 and 15 1/4 m and using platinum wirewas successfully designed, fabricated and characterized for in-situ monochloraminemeasurement within chloraminated distribution system biofilm. The monochloraminemicroelectrode showed sensitivity toward monochloramine concentrations (0.54 to 16.1 mgClsub2/sub/L) at an applied potential of +550 mV (Ag/AgCl reference electrode) at pH 8.0 and 23C.The monochloramine microelectrode has successfully measured monochloramine microprofileswith high spatial resolution (50 m) without biofilm structure disruption during measurements.Ultimately, this research will lead to a better understanding of the monochloraminemicroelectrode for in situ application within a chloraminated drinking water system biofilm; and,along with other microelectrodes (e.g., ammonia, pH, DO) under development, elucidate thenitrification phenomena occurring in the biofilm. Includes 10 references, figures.

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Edition: Vol. - No. Published: 11/01/2008 Number of Pages: 6File Size: 1 file , 820 KB