Combating nitrogen-driven coastal eutrophication: a selective ion array approach to rapid in-situ measurement of nitrate and ammonium

PI: Harold Hemond, MIT

Project Number:2011-R/RCM-33

Start Date:2011-02-01End Date:2014-01-31

Proposal Summary

The Investigator will develop tools and methods to detect the presence and the source of ammonium and nitrate ions in water of varying salinity. Such ions signal the presence of nitrogen-laden runoff which is responsible for the destructive eutrophication of bays and salt ponds. Arrays of electrodes capable of detecting these telltale ions will be implemented, and signal processing methods will be calibrated and tested for accuracy on site in natural waters. This capability will support decisions and policies to protect the Massachusetts estuarine ecosystems that serve as nurseries and spawning habitat for anadromous fish.

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