Contributions to the ethyl acetate application in residue analysis

Summary For the determination of pesticide residues 10 fruit and vegetable samples and 2 wheat samples with unknown spray history were extracted by the micro on-line extraction technique using the binary solvent system water + ethyl acetate as the extracting agent. The results of this proposed micro extraction were compared with already tested methods and it was found that the micro ethyl acetate method was equally effective. The reduction of solvents and chemical waste by miniaturization of analytical procedures is an important step for environmental protection.