Determination of phenoxy acid herbicides frm aqueous samples by improved clean-up on polymeric precolumns at high pH.

R.B. Geerdink, S. van Tol-Wildenburg, W.M.A. Niessen, U.A.T. Brinkman

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

An improved procedure for the determination of phenoxy acid herbicides in environmental water samples is reported. The procedure consists in solid-phase extraction (SPE) of 60 ml water samples on a polymeric pre-column at pH 2.8, a clean-up step at high pH and subsequent desorption and ion-pair LC separation at pH 8.8. The main improvements are in the basic clean-up step and in the LC eluent composition. The release of compounds which are electrostatically bound to the precolumn is favoured by a washing step with 0.1 mol l
Original languageEnglish
Pages (from-to)889
JournalAnalyst
Volume122
DOIs
Publication statusPublished - 1997

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