Simultaneous determination of multiresidual phenyl acetanilide pesticides in different food commodities by solid‐phase cleanup and gas chromatography‐mass spectrometry

Abstract

An efficient and sensitive multiresidue method has been developed for quantification and confirmation of 25 phenyl acetanilide pesticides in a wide variety of food commodities including maize, spinach, mushroom, apple, soybean, chestnut, tea, beef, cattle liver, chicken, fish, and milk. Analytes were extracted with acetone-n-hexane (1:2, v/v) followed by cleanup using SPE. Several types of adsorbents were evaluated. Neutral aluminum and graphitized carbon black cartridge showed good cleanup efficiency. The extract was determined by GC-MS in the selected ion monitoring mode using one target and two qualitative ions for each analyte. The limits of detection were 0.01 mg/kg for all analytes. The average recoveries ranged from 66.9 to 110.6% (mean 88.8%) and RSDs were in the range 2.0-19% (mean 10.5%) across three fortification levels. The proposed method was successfully applied to real samples in routine analysis and a satisfactory result was obtained.

Residue determination of plant activator benzo-1,2,3-thiadiazole-7- carboxylic acid 2-benzoyloxyethyl ester in water, soil, and vegetable by gas chromatography with tandem mass spectrometry

“…Besides acetonitrile described above, another two organic solvents including ethyl acetate and acetone were applied for extracting of three types of soil and vegetables in this investigation [17,19,20]. Briefly, 50 mL organic solvent, 20 mL water, and 20 g sample were mixed together and shaken (180 rpm × 60 min for soil sample) or homogenized (6000 rpm × 2 min for vegetable sample).…”

Multi-class determination of pesticides and mycotoxins in isoflavones supplements obtained from soy by liquid chromatography coupled to Orbitrap high resolution mass spectrometry

“…For the detection of pesticides, different detectors were used, including electron capture detector (ECD) (Bohn et al, 2014), diode array detector (DAD) (Hern andez et al, 2005;Maldaner et al, 2008) ultraviolet detection (UV) (Prasad et al, 2013), single quadrupole (Q) (Gonçalves de Abreu et al, 2008;Marchis et al, 2012;Li et al, 2013b) triple quadrupole (QqQ) (Li et al, 2013a) and Orbitrap Farr e, Pic o, & Barcel o, 2014). In the case of mycotoxins, Q (Schollenberger et al, 2007;Zhao et al 2013), ion trap (IT) (Warth et al, 2012) and QqQ (Di Mavungu et al, 2009) were applied.…”

“…Concerning extraction procedures of pesticide residues from soy products, different methodologies as QuEChERS (acronym of quick, easy, cheap, effective, rugged and safe) (Li et al, 2013a;Marchis et al, 2012;Wang, Cheung, & Chow, 2013), "dilute and shoot" (Gonçalves de Abreu et al, 2008;Prasad, Upadhyay, & Kumar, 2013;Li, Wang, Yang, Fu, & Dai, 2013b), solid phase extraction (SPE) (Hern andez, Rodríguez, García, & Cifuentes, 2005) and matrix solid phase dispersion (MSPD) (Maldaner, Santana, & Jardim, 2008) have been applied. QuEChERS has been proposed as a reference methodology for pesticide extraction because of its speed, cheapness and robustness.…”

“…Gas chromatography (GC) (Bohn et al, 2014;Gonçalves de Abreu et al, 2008;Li et al, 2013b;Marchis et al, 2012) and liquid chromatography (LC) (Li et al, 2013a;Maldaner et al, 2008;Prasad et al, 2013;Wang et al, 2013) were mainly used to determine pesticides in soy related products, as well as mycotoxins (Schollenberger et al, 2007;Warth et al, 2012;Zhao et al, 2013). For the detection of pesticides, different detectors were used, including electron capture detector (ECD) (Bohn et al, 2014), diode array detector (DAD) (Hern andez et al, 2005;Maldaner et al, 2008) ultraviolet detection (UV) (Prasad et al, 2013), single quadrupole (Q) (Gonçalves de Abreu et al, 2008;Marchis et al, 2012;Li et al, 2013b) triple quadrupole (QqQ) (Li et al, 2013a) and Orbitrap Farr e, Pic o, & Barcel o, 2014).…”

Quantification of Morpholine in Peel and Pulp of Apples and Oranges by Gas Chromatography−Mass Spectrometry

“…To analyze morpholine in fruit and vegetable matrix, various sample preparation methods were used. For example, the cleanup method (i.e., dispersive micro solid phase extraction) was included in a previous study [17,[19][20][21]. In the previous study, dispersive micro solid phase extraction was conducted using PCX (polymer cation exchange) powder that can adsorb alkaline chemical compounds [17].…”