title: Extraction-photometric determination of nitrite in fresh and sea water.
mesh_terms: D008722:Methods; D009573:Nitrites / Q000032:analysis*; D010777:Photochemistry; D012623:Seawater / Q000032:analysis; D013053:Spectrophotometry; D014876:Water Pollution / Q000032:analysis*
chemical_list: D009573:Nitrites