Method of detecting nitrogen oxides in gaseous or liquid samples

Details Method of detecting nitrogen oxides in gaseous or liquid samples Method of detecting nitrogen oxides in gaseous or liquid samples

1988-09-16

1989-07-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

G01N 2756

Patent

active

048490580

ABSTRACT:
A method for determining nitrogen oxides in gaseous or liquid samples is disclosed. A semi-permeable membrane- type sensor comprising a sensor electrode, reference electrode and an electrolyte having a pH range of 6.8-8.0 or 8.0-9.2 is used. Potential between the electrodes is monitored as a measure of nitrogen oxides in the sample. When an electrolyte having a pH range of 8.0-9.2 is used the electrolyte additionally contains at least 25% v/v of a water miscible solvent having a dielectric constant of at least 10.

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