CLOUD POINT EXTRACTION OF NAPROPAMIDE AND THIABENDAZOLE FROM WATER AND SOIL

The micellar extraction and enrichment of napropamide and thiabendazol e using Genapol X 80 is described. Combined with their quantification by fluorescence, detection limits below 0.2 mug/l with recovery rates of up to 95% were achieved. The recovery could be improved by lowering the extraction temperature and purificaton of the surfactants. This e xtraction method has been applied to the isolation and preconcentratio n of napropamide from standard soils. Experimental parameters affectin g the recovery rates were examined.