FIELD: chemistry. SUBSTANCE: process is used in analytical chemistry of organic compounds and for test of chemical compounds in purified sewage of phenol production. Process of detection of hydroquinone ( catechol ) in aqueous solutions by volt-ampere method supposes preliminary treatment of sample with toluene solution of trioctylaminoxide followed by determination of hydroquinone ( catechol ) in extracted organic phase on glass carbon electrode with pH 2.0-3.0 and advanced dilution of analyzed extract with acetonitrile in volumetric relation 1:1 and addition of saturated solution of sodium perchlorate in isopropyl alcohol. EFFECT: reduced consumption of reagents, increased degree of extraction of determined component from sample. 1 tbl
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