title: Confirmation of pesticide residue identity. VI. Derivative formation in solid matrix for confirmation of heptachlor and endosulfan isomers.
mesh_terms: D002845:Chromatography; D004726:Endosulfan / Q000032:analysis*; D004787:Environmental Pollution / Q000032:analysis; D006533:Heptachlor / Q000032:analysis*; D007536:Isomerism; D008722:Methods; D010573:Pesticide Residues / Q000032:analysis*; D013464:Sulfuric Acids
chemical_list: D010573:Pesticide Residues; D013464:Sulfuric Acids; D006533:Heptachlor; D004726:Endosulfan