METHOD OF DETERMINING HYDROQUINONE AND PYROCATECHOL IN AQUEOUS MEDIA Russian patent published in 2003 - IPC

Abstract RU 2205398 C1

FIELD: analytical methods. SUBSTANCE: method is applicable for analytical control of treated waste waters coming from enterprises of varnish-and-paint and photographic industries. For extraction concentration at pH 2-3, 0.5 M hexane solution of trioctylphosphine oxide is used and hydroquinone and pyrocatechol are determined in separated organic phase by technique of reverse-phase microcolumn liquid chromatography. EFFECT: simplified method due to use of commercial reagents, conventional equipment, increased selectivity, and reduced amount of aqueous sample of extraction reagents. 2 tbl, 3 ex

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RU 2 205 398 C1

Authors

Kharitonova L.A.

Korenman Ja.I.

Rudakov O.B.

Dates

2003-05-27Published

2001-12-24Filed