Spectrophotometric determination of nitrate in water in the 0.1 microgram range.
D008832:Microchemistry; D009566:Nitrates / Q000032:analysis*; D013053:Spectrophotometry; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D009566:Nitrates; D014873:Water Pollutants; D014874:Water Pollutants, Chemical