FIELD: analytical chemistry. SUBSTANCE: method of separate determination of 2-nitrophenol, 2-amino-5-nitrophenol, 2-amino-4,6-dinitrophenol and 2,4,6-trinitrophenol in water involves preliminary concentration with organic solvent in the presence of desalting agent and potentiometric titration of nonaqueous extract with KOH solution in isopropanol. Solvent: tert.-butyl alcohol; desalting agent: ammonium sulfate at concentration 36.5-40.0 wt.-% with relation to the sample. EFFECT: improved method of assay. 2 cl
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