title: A modified spectrophotometric methods for nitrate in plants, soils and water by nitration of 3,4-dimethylphenol.
mesh_terms: D009566:Nitrates / Q000032:analysis*; D010636:Phenols; D010944:Plants / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D009566:Nitrates; D010636:Phenols; D012987:Soil; D014873:Water Pollutants; D014874:Water Pollutants, Chemical