Determination of nitrate in water with an ammonia probe.
D000641:Ammonia / Q000032:analysis*; D004566:Electrodes; D008722:Methods; D009566:Nitrates / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*
D009566:Nitrates; D014873:Water Pollutants; D000641:Ammonia