title: Evaluation of the potential of GC-APCI-MS for the analysis of pesticide residues in fatty matrices.
abstract: A method based on gas chromatography-atmospheric pressure chemical ionization-mass spectrometry (GC-APCI-MS) has been developed for the analysis of pesticides in meat by using quadrupole-time of flight mass spectrometry (QTOF-MS). Ionization and MS conditions were studied for 71 compounds, although only 51 showed acceptable performance. The protonated form of the analytes was mainly found ([M + H]⁺), although some compounds generated the molecular ion (M⁺(•)). A fast and generic extraction procedure was applied in sample pretreatment. The analytical method was suitable for qualitative analysis, and it was also evaluated for quantitative analysis, obtaining adequate recovery and precision values for most of the studied analytes at two concentration levels (50 and 150 μg/kg). Several operational drawbacks were found with this instrument, such as slow stabilization and moderate sensitivity, although the fast switching between LC and GC allows the increase of its applicability.
authors.forename: María Luz
authors.initials: ML
authors.lastname: Gómez-Pérez
authors.forename: Patricia
authors.initials: P
authors.lastname: Plaza-Bolaños
authors.forename: Roberto
authors.initials: R
authors.lastname: Romero-González
authors.forename: José Luis
authors.initials: JL
authors.lastname: Martínez Vidal
authors.forename: Antonia
authors.initials: A
authors.lastname: Garrido Frenich
mesh_terms: D000818:Animals; D001274:Atmospheric Pressure; D002417:Cattle; D002645:Chickens; D004041:Dietary Fats / Q000032:analysis*; D005506:Food Contamination; D005513:Food Inspection / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D008460:Meat / Q000032:analysis* / Q000191:economics; D015233:Models, Statistical; D015394:Molecular Structure; D008970:Molecular Weight; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D013030:Spain; D034421:Sus scrofa
chemical_list: D004041:Dietary Fats; D010573:Pesticide Residues