Nitrite Determination in Environmental Samples with an Ion-selective Electrode

The possibility of using an Orion nitrogen oxide electrode for nitrite determination in environmental samples has been investigated. In samples with nitrite concentration below 0.2 mg/dm3 the electrode method is inferior to ·the classical Griess-Saltzman method. However, at higher nitrite levels (above 0.5 mg/dm3) the electrode method offers advantages because of its simplicity and short determination times. Nitrite concentration determined ranged from 0.020 mg/dms (in river water) up to several mg/dm~ (in frankfurters)