title: Dissipation kinetics of fluquinconazole and pyrimethanil residues in apples intended for baby food production.
abstract: Dissipation behaviour of simultaneously applied fungicides fluquinconazole and pyrimethanil was studied in/on apples intended for baby food production (cultivars Jonagold Decosta, Golden and Champion). The apples were sprayed at two dosages to control the pathogen Venturia inaedequalis (Cooke) Aderh. A validated gas chromatographic method (GC-ECD and GC-NPD) was used to determine the fungicides residues, the analytical performance of which was highly satisfactory with expanded uncertainties not higher than 15% (coverage factor k=2, confidence level 95%) The dissipation of the fungicide residues was fitted to the experimental data assuming pseudo first-order decay kinetics (R(2) between 0.897 and 0.992). To obtain the fungicide residues below 0.01 mg/kg, which is the default maximum residue level for food intended for infants and young children, the application of the fungicides under study should be carried out 2 or 3 months before harvest at the lower (1.0 L/ha) and the higher (1.5 L/ha) recommended dose, respectively.
authors.affiliation: Laboratory of Pesticide Residue Analysis, Regional Experimental Station, Institute of Plant Protection - National Research Institute, Langiewicza 28, 35-101 Rzeszów, Poland. e.szpyrka@iorpib.poznan.pl
authors.forename: Ewa
authors.initials: E
authors.lastname: Szpyrka
authors.forename: Stanisław
authors.initials: S
authors.lastname: Walorczyk
mesh_terms: D005659:Fungicides, Industrial / Q000737:chemistry*; D007225:Infant Food / Q000032:analysis*; D007700:Kinetics; D027845:Malus / Q000737:chemistry*; D010573:Pesticide Residues / Q000737:chemistry*; D011743:Pyrimidines / Q000737:chemistry*; D052999:Quinazolinones / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
chemical_list: D005659:Fungicides, Industrial; D010573:Pesticide Residues; D011743:Pyrimidines; D052999:Quinazolinones; D014230:Triazoles; C587323:fluquinconazole; C108337:pyrimethanil
keywords: Apple; Baby food; Fluquinconazole; Pyrimethanil; Residue dissipation