Derivatization and GLC Determination of the Sterically Hindered 2,6-Difluorobenzoic Acid in Pond Water

摘要

A gas-liquid chromatographic procedure has been developed for the analysis of 2,6-difluorobenzoic acid at picogram levels from fortified pond water. Residues from fortified pond water were extracted using ethyl acetate and derivatized with pentafluorobenzyl bromide. The resulting pentafluorobenzyl ester derivative proved to be highly sensitive to EC-GLC detection. At a signal to noise ratio of 3:1 at maximum sensitivity, the limit of detection for the derivative was 1.6 picograms per injection.