title: Assessing supercritical fluid extraction for the analysis of fipronil, kresoxim-methyl, acrinathrin, and pyridaben residues in melon.
abstract: An analytical method, using supercritical fluid extraction (SFE), was assessed for residue analysis of the insecticides fipronil, acrinathrin and pyridaben and the fungicide kresoxim-methyl in melons. Extraction conditions were optimized on glass beads, as inert material, evaluating different pressures, temperatures, and CO(2) volumes. Also, the extractability of pesticides from hydromatrix and anhydrous magnesium sulfate was evaluated. Both adsorbents were evaluated for the preparation of SFE-spiked melon samples. Extractions of fortified samples were done using 20 mL of CO(2), 300 atm, and 50 degrees C. Different extraction conditions, including the addition of water and methanol as a static modifier, were used to assess the extractability of these pesticides, and the addition of methanol was demonstrated to improve the extraction of all the studied pesticides.
authors.affiliation: Pesticide Residue Research Group, University of Almería, Almería, Spain.
authors.forename: Mourad
authors.initials: M
authors.lastname: Boulaid
authors.forename: Ana
authors.initials: A
authors.lastname: Aguilera
authors.forename: Valentina
authors.initials: V
authors.lastname: Busonera
authors.forename: Francisco
authors.initials: F
authors.lastname: Camacho
authors.forename: Antonio V
authors.initials: AV
authors.lastname: Monterreal
authors.forename: Antonio
authors.initials: A
authors.lastname: Valverde
mesh_terms: D002245:Carbon Dioxide; D025924:Chromatography, Supercritical Fluid; D003257:Consumer Product Safety; D019662:Cucurbitaceae / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D008689:Methacrylates / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D010648:Phenylacetates / Q000032:analysis; D011312:Pressure; D011720:Pyrazoles / Q000032:analysis; D011722:Pyrethrins / Q000032:analysis; D011724:Pyridazines / Q000032:analysis; D000073739:Strobilurins; D013696:Temperature; D005466:Fluorocarbons
chemical_list: D002245:Carbon Dioxide; D005659:Fungicides, Industrial; D007306:Insecticides; D008689:Methacrylates; D010573:Pesticide Residues; D010648:Phenylacetates; D011720:Pyrazoles; D011722:Pyrethrins; D011724:Pyridazines; D000073739:Strobilurins; C469328:kresoxim-methyl; C428725:pyridaben; C082360:fipronil; C119568:acrinathrin; D005466:Fluorocarbons