GC/MS is a technique used for the identification of pesticide residues in a given sample. The extraction of pesticides from the sample is done by using a solvent. The GC/MS gives the elution, retention time and molecular weight of each pesticide in the residue. The data obtained is then compared with that of a referenced pesticide. In this experiment spinach, guava and orange were used. The samples were divided into two groups: - fruits/vegetables with pesticides and fruits/vegetables without pesticides. The samples were extracted with acetonitrile in a mixture of toluene. The extract was...