FIELD: organic chemistry, analytical chemistry, chemical technology.
SUBSTANCE: method involves addition of ammonium sulfate up to saturation to analyzed solution in the process of extraction and prepared solution is passed through sorbent-polycarbonate modified with 46.7-47.1 wt.-% of tributylamine at the rate 0.8-1 cm3/min in the mass ratio sorbent to sample = 1:10. Invention can be recommended for extraction naphthol- and phenolsulfoacids (2-naphthol-6-sulfoacid, 2-naphthol-6,8-disulfoacid, 1-amino-8-naphthol-3,6-disulfoacid, 1-amino-2-naphthol-4-sulfoacid, 2-aminophenol-4-sulfoacid, 2-ethylphenol-4-sulfoacid, phenol-4-sulfoacid and 5-aminosulfosalicylic acid) from treated sewage waters in manufacturing azodyes. In a single extraction method provides extraction of 84.0-99.9% of hydroxysulfoacids.
EFFECT: improved method for extraction.
1 tbl, 17 ex
