[Determination of ammonium and nitrite ions in the water of reservoirs].
D009573:Nitrites / Q000032:analysis*; D010783:Photometry; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D009573:Nitrites; D000644:Quaternary Ammonium Compounds; D014873:Water Pollutants; D014874:Water Pollutants, Chemical
K voprosu opredeleniia ammoniĭnykh i nitritnykh ionov v vode vodoemov.