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  • Determination of residual bromopropylate and coumaphos in honey and honeycomb by capillary gas chromatography.

Determination of residual bromopropylate and coumaphos in honey and honeycomb by capillary gas chromatography.

Zeitschrift fur Lebensmittel-Untersuchung und -Forschung (1989-02-01)
W van Rillaer, H Beernaert
ABSTRACT

This study describes a method for the quantitative determination of residual bromopropylate (BP) and coumaphos (Cph) in honey and honeycomb. It is based on a reversed phase extraction technique on sorbent octadecyl. Both phyto-pharmaceuticals are determined by electron-capture using a fused silica capillary column CP Sil 5 CB. The absolute detection limit for BP and Cph is 2.5 and 5 pg, respectively. Recoveries of 99.6% and 94.4% are obtained for samples fortified at levels of 400 micrograms BP/kg and 1,000 micrograms Cph/kg. Twelve samples of honey and 8 samples of honey-honeycomb have been analysed using this method. BP and Cph could not be detected in the honey samples. Samples of honey-honeycomb recently treated with Perizin (Cph) and Folbex VA (BP) contained different amounts of BP and Cph.