Evaluation of rapid partitioning cleanup method for pesticides.

A partitioning cleanup method performed in test tubes with small solvent volumes, and using syringes instead of separatory funnels for phase separations, has been tested for potential as a general cleanup method for a variety of pesticidal compounds. More than 50% recoveries were obtained for most of the 60 compounds tested, even though minimal manipulation rather than maximum recovery was the aim. Since the recoveries usually are constant, procedural losses can be compensated for by correction factors.