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The results of this investigation showed that aside from the parent compound, there were two major metabolites of Dasanit in cotton plants. They were the oxygen analog (I) and the Dasanit sulfone (VI). A small amount of oxygen analog sulfone (IV) was also detected. No S-ethyl analogs (II and V) were found.

tographic cleanup methods. The authors' years of experience with the apparatus (8) indicate that up to six to eight samples of 0.5 ml. each of concentrated citrus extractives can be cleaned up before the stripping tube is overloaded. From the injection of the sample to the final recovery of the solvent-free concentrated extractive, which is directly usable for gas chromatographic analysis, not more than 30 minutes of elapsed time are required. Since it is hoped that this procedure will also be found advantageous for the cleanup of volatile pesticide-containing extracts prior to paper or thin-layer and gas. chromatographic analysis, construction details of the apparatus are given.

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