Abstract

The broad application of cabofuran pesticide in sugar-cane cultures and its high toxicity makes it essential a search for new methods of preparing the samples to analysis of this pesticide in this culture. This work tried to optimize the solid-liquid extraction technique with low temperature partitioning (SLE/LTP) to determine the carbofuran in samples of sugar cane. The SLE/LTP technique, is a simple technique that shows advantages regarding other extraction techniques. Being so, a factorial experimental design 23 was created to study the simultaneous behavior of three factors in two levels. After this stage of split, to split, identification and qualification of carbofuran was analyzed the supernatant using the high efficiency of liquid chromatography  with ultraviolet detector (HPLC/UV). The method ´s efficient to the extraction of carbofuran from sugar cane with percentages of recovery over the 73,0 %.  After optimizing, the technique was applied in real samples of sugar cane in the region of Itumbiara-GO, Brazil. No carbofuran residues were found in the analyzed samples or they were below the detection limit. The SLE/LTP technique optimized to sugar cane, showed to be simple and efficient, being a economic method, consuming a little amount of sample and solvent extractor.

Authors and Affiliations