Abstract
In order to detect malathion in waxes of wheat, a chromatography was tried on the extract of the plant through a column of the silica gel and charcoal double layers.
The wax contaminants were effectively eliminated by the column and the following gas chromatography resulted in a good detection of malathion.
The recovery of malathion added to the sample was good enouglh for a practical purpose.
The range of reeovery was essentially 100% (99-118%).
For the mass spectroscopic idelntification of malathien, the further purification was necessary and a combination of the double layer chromatography and the silica gel thinlayer chrematography were tested to eliminate the residual waxes.
Identification of the eharacteristic peaks owing to malathion was achieved on the mass spectrogram after the sample was pretreated through the combined purification procedure.
