Low temperature followed by matrix solid-phase dispersion-sonication procedure for the determination of multiclass pesticides in palm oil using LC-TOF-MS

Supercritical fluid extraction followed by nanostructured supramolecular solvent extraction for extraction of levonorgestrel and megestrol from whole blood samples

“…From the first introduction of MSPD in 1989 by Barker, it has found increasing acceptance in trace analysis of organic compounds using chromatographic techniques due to providing sample homogenization, extraction, and clean up in one step [6][7][8]. Until now, MSPD in combination with chromatography methods has been successfully applied for determination of different analytes in various biological samples [9][10][11][12][13][14][15][16][17][18][19][20].…”

Preparation of malathion MIP-SPE and its application in environmental analysis

“…There are methods that have been developed for assessing malathion residues, such as kinetic spectrophotometric method (Pandey et al 2014), biosensor (Raghu et al 2014), gas chromatography (GC) (Lofty et al 2013), high-performance liquid chromatography (HPLC) (Tsiropoulos et al 2006), gas chromatographymass spectrometry (GC-MS) (Chowdhury et al 2013), flow injection-tandem mass spectrometry (FI-MS/MS) (Nakazawa et al 2004), and high-performance liquid chromatography-mass spectrometry (HPLC-MS) (Sobhanzadeh et al 2011). The traditional cleanup procedures for assessment of malathion residues include liquid-liquid partition (Lofty et al 2013), SPE (Sanchez-Brunete et al 2005), and matrix solid-phase dispersion extract (Nieto-García et al 2015).…”

Determination of Organophosphorus Pesticides in Edible Oils by Dispersive Microextraction Based on Acetonitrile/Water‐coated Fe3O4

“…Thus, gas chromatography-mass spectrometry (GC-MS) [1,2,9,[18][19][20] in the selected ion mode (SIM) and gas chromatography-tandem mass spectrometry (GC-MS/MS) [4,5,9,10,[21][22][23] are the preferred methods of choice as they provide better sensitivity and confirmation reliability. Other approaches, such as liquid chromatography-tandem mass spectrometry (LC-MS/MS) [19,22], liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS) [24] and LC-GC using the through oven transfer adsorption-desorption interface (TOTAD) have also been applied on a certain scale [7,25]. Recently, systems of amperometric biosensors based on sol-gel immobilization of acetylcholinesterase were constructed for the determination of OPP in olive oil with detection limits as low as 10 -9 M [26].…”

“…The analysis of pesticide residues in edible oils is very challenging because of the inherent complexity of the matrix, mainly triglycerides and pigments, which may have an adverse effect on the results of analysis [24]. For this reason, an additional sample extraction and purification step to remove the lipidic components co-extracted with the target compounds is required prior to subsequent steps in the analytical process.…”