Direct electrochemical flow analysis system for simultaneous monitoring of total ammonia and nitrite in seawater.

Abstract The design and the performance of a new portable flow analysis (FA) system for the continuous, fast and accurate measurement of total ammonia and nitrite content in non-filtered seawater samples is demonstrated. The complete system has been optimized to operate within the ammonia and nitrite concentration range of 0.05–10 ppm. The system offers good reproducibility (