Stripping unmacerated crops with benzene as an extraction method for malathion postharvest residues on fruits was compared with three other methods: blending the crop in water with subsequent tumbling with benzene, blending in ethanol with subsequent tumbling with benzene, and drastic blending in chloroform followed by additional extractions with a methanol-acetone mixture. In all cases stripping the unmacerated crops gave the highest values of initial deposits and in most cases also the highest residue recoveries during the first few days after malathion application; later, slightly higher recoveries were obtained from the blended macerated materials.
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