A reliable, sensitive and selective method was successfully developed to determine 15 different mycotoxins simultaneously in foods and feeds. In this method, the homogenized sample was first treated with gel permeation chromatography (GPC) to eliminate most of coextracts, such as pigments, lipids and waxes. A quick, easy, cheap, effective, rugged, and safe (QuEChERS) method was then carried out...

It is important to have a reliable method to analyze pesticides in tea, a beverage commonly consumed in Iran. A validated method was developed for the determination of 20 pesticides in tea based on QuEChERS sample preparation and capillary gas chromatography-quadrupole mass spectrometry in selective ion monitoring mode (GC-MS/SIM) using triphenyl methane (TPM) solution as an internal standard. ...

Liquid chromatography - high resolution mass spectrometry (LC-HRMS) developed to screen some residues in rice. Pesticides, aflatoxin B1, B2, G1, aflatoxin G2 and quaternary ammonium surfactants were detected by the optimized method. Rice samples extracted cleaned QuEChERS then analyzed QExactive system with HESI ionization source for both negative positive modes. The&...

A modified-QuEChERS method to determine kresoxim-methyl in banana and soil was developed validated via high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS). The dissipation behavior, residue distribution, risk assessment of were further investigated based on this method. behavior described by using first-order kinetics its half-life, 4.8–5.7 days 5.5–6.5 days, respective...

This paper describes the use of a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for extraction and cleanup of 16 pesticide residues of interest in olives and olive oil. These products contain a high lipid content, which can adversely affect pesticide recoveries and harm traditional chromatographic systems. For extraction, the main factors (oil and water content) were studied...

We developed a method for simultaneous analysis of nine trichothecenes (nivalenol, deoxynivalenol, fusarenon-X, neosolaniol, 3-acetyldeoxynivalenol, 15-acetyldeoxynivalenol, diacetoxyscirpenol, HT-2 toxin, and T-2 toxin). Trichothecenes in samples were extracted with acetonitrile-water (1 : 1) and purified using a QuEChERS kit and a multi-functional cartridge. Then they were quantified by LC-MS...