Determination of Over 350 Multiclass Pesticides in Jams by Ultra-High Performance Liquid Chromatography Time-of-Flight Mass Spectrometry (UHPLC-TOFMS)

Simultaneous determination of spinosad, temephos, and piperonyl butoxide in animal‐derived foods using LC–MS/MS

“…For all matrices, the LOD and LOQ values ranged between 0.1–1.6 and 0.3–4.4 μg/kg, respectively, as shown in Table . Notably, previous studies (Morphet & Hancock, ; Pérez‐Ortega et al, ; Pérez‐Ortega et al, ) that determined spinosad, temephos and piperonyl butoxide residues in food did not report validation parameters. Additionally, the obtained LOQs were much lower than the MRLs established by various regulatory agencies (EU, ; Federal Register of Legislation, ; Ministry of Health, Labour and Welfare, Japan, ; US Food and Drug Administration, ), as summarized in Table , meaning that the developed method is sensitive enough to determine the residual levels of the tested analytes in animal‐derived foods.…”

“…The QuEChERS methodology is generally used for the simultaneous determination and quantification of multiple pesticide residues (Zheng et al, ), including spinosad, temephos and piperonyl butoxide (Morphet & Hancock, ; Pérez‐Ortega et al, ; Pérez‐Ortega et al, ). Therefore, the extraction efficiency (at 50 μg/kg) of the CEN QuEChERS kit (4 g of magnesium sulfate, 1 g of sodium chloride, 1 g of sodium citrate tribasic dihydrate and 0.5 g of sodium citrate dibasic sesquihydrate) combined with d‐SPE (150 mg of C 18 sorbent and 900 mg of MgSO 4 ) was assessed.…”

“…The only MRL that has been set for temephos is in pig muscle (0.5 mg/kg) was set by the Ministry of Health, Labour and Welfare, Japan (). To the best of our knowledge, simultaneous determination of spinosad, temephos and piperonyl butoxide residues has been reported in jams (Pérez‐Ortega et al, ), fruits and vegetables (Morphet & Hancock, ; Pérez‐Ortega et al, ); however, the determination of these residues in animal‐derived foods has not attracted similar attention. Therefore, a rapid and effective extraction and clean‐up protocol is necessary for a reliable analysis and screening of these xenobiotics in matrices rich in proteins and fats.…”

Quantitative and Confirmatory Analysis of Pesticide Residues in Cereal Grains and Legumes by Liquid Chromatography–Quadrupole-Time-of-Flight Mass Spectrometry

“…They are highly sensitive and selective, which enables the robust quantification of trace amounts of pesticide residues in complex matrices. In recent years, LC and GC coupled with high-resolution mass spectrometry (HR-MS) methods, such as time-of-flight (TOF)-MS, quadrupole-TOF-MS (QTOF-MS), Orbitrap-MS, and quadrupole-Orbitrap-MS (QOrbitrap-MS) have also been employed for the screening and quantification of pesticide residues [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. LC and GC coupled with HR-MS operating in full-scan mode with high mass accuracy have several advantages over LC–MS/MS and GC–MS/MS operating in SRM mode: (1) There are no limits on the number of target compounds that can be analyzed simultaneously [ 7 , 8 ].…”

Eliminación de pesticidas organofosforados mediante fotoelectrocatálisis con fotoánodos de WO3

“…Al analizar el valor de m/z de este pico, ésta ha sido la molécula que se ha obtenido como posible compuesto. Su valor de m/z es 189.958 y el tiempo de retención al que ha aparecido ha sido a 1 min [119]. En la Figura 4.72, se muestra su cromatograma con el paso del tiempo, así como el espectro de masas asociado a este compuesto.…”