FIELD: organic chemistry, analytical chemistry.
SUBSTANCE: method for concentrating hydroquinone from aqueous solutions involves extraction with an organic solvent wherein tributyl phosphate is used as an organic solvent that is applied preliminary of foam polyurethane in the mass ratio polyurethane foam : tributyl phosphate = 1:(2.5-3.0). Proposed method provides: to enhance the concentrating coefficient by 2.5-fold; to enhance extraction degree up to 96%; to exclude desalting agent from extraction system, and to reduce cost of analysis. Invention can be recommended for concentrating hydroquinone in analytical control of sewage feeding to biological treatment.
EFFECT: improved concentrating method.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS OF CONCENTRATING RESORCINOL FROM WATER SOLUTIONS | 2007 |
|
RU2324675C1 |
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RU2680394C2 |
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|
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| METHOD FOR CONCENTRATING DIPHENYLAMINE FROM AQUEOUS SOLUTIONS | 2003 |
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| METHOD FOR CONCENTRATING 1-NAPHTHOL-5-SULFOACID FROM AQUEOUS SOLUTIONS | 2004 |
|
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| METHOD OF CONCENTRATING RESORCINOL FROM AQUEOUS SOLUTIONS | 2010 |
|
RU2425021C1 |
