Results 21 to 30 of about 4,415 (184)

Comparison of Sin-QuEChERS Nano and d-SPE Methods for Pesticide Multi-Residues in Lettuce and Chinese Chives

open access: yesMolecules, 2020
In this study, a new rapid cleanup method was developed for the analysis of 111 pesticide multi-residues in lettuce and Chinese chives by GC–MS/MS and LC–MS/MS. QuEChERS (quick, easy, cheap, effective, rugged and safe)-based sample extraction was used to
Yanjie Li   +4 more
doaj   +1 more source

Extraction of ochratoxin A in bread samples by the QuEChERS methodology [PDF]

open access: yesFood Chemistry, 2012
A QuEChERS method for the extraction of ochratoxin A (OTA) from bread samples was evaluated. A factorial design (2(3)) was used to find the optimal QuEChERS parameters (extraction time, extraction solvent volume and sample mass). Extracts were analysed by LC with fluorescence detection.
Paíga, Paula   +7 more
openaire   +3 more sources

Combined (d)SPE-QuEChERS Extraction of Mycotoxins in Mixed Feed Rations and Analysis by High Performance Liquid Chromatography-High-Resolution Mass Spectrometry

open access: yesToxins, 2020
The objective of this work was the development of a methodology capable of simultaneously determine 26 mycotoxins in mixed feed rations collected in 20 dairy farms.
Rocio Facorro   +2 more
doaj   +1 more source

Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review

open access: yesMolecules, 2022
Pesticides are among the most important contaminants worldwide due to their wide use, persistence, and toxicity. Their presence in soils is not only important from an environmental point of view, but also for food safety issues, since such residues can migrate from soils to food.
Miguel Ángel González-Curbelo   +2 more
openaire   +3 more sources

Development of QuEChERS/HPLC technique for the determination of veterinary drug residues in beef samples [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2023
The application of antibiotics in animals for therapeutic and growth promotion purposes and to meet the need to increase meat production has been reported to cause the development of antibiotic resistance and other health risks due to the consumption ...
Abibat Monisola Junaid   +9 more
doaj  

Quantification of Pesticide Residues in Selected Vegetables using the QuEChERS Method [PDF]

open access: yesOUSL Journal, 2018
Pesticide residues in fruits and vegetables have become a major problem in Sri Lanka. Therefore, there is a need to optimize the Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method to determine pesticide residues in fruits and vegetables ...
Meragal Kulathilakage Lasanthi Kumari Rajapakse   +2 more
doaj   +1 more source

Determination of Cyhalofop-butyl and Cyhalofop-acid Residues in Cereals and Oilseeds by QuEChERS-UPLC

open access: yesShipin gongye ke-ji, 2022
Objective: The method of QuEChERS-UPLC was established for the simultaneous determination of cyhalofop-butyl and cyhalofop-acid residues in cereals and oilseeds.
Hongxia PENG   +6 more
doaj   +1 more source

Simultaneous Determination of Major Antibiotics Veterinary Drug Residues in Pork by UHPLC-Q-TOF/MS

open access: yesShipin gongye ke-ji, 2022
A method for simultaneous determination of 10 veterinary antibiotics residues in pork by QuEChERS purification combined with ultra performance liquid chromatography tandem quadrupole-time of flight mass spectrometry (UHPLC-Q-TOF/MS) was developed.
Fei PEI   +6 more
doaj   +1 more source

Development of QuEChERS method Combined with dispersive liquid-liquid microextraction for determination of some pesticides in cucumber samples using High-performance liquid chromatography [PDF]

open access: yesBihdāsht-i Mavādd-i Ghaz̠āyī, 2023
Due to the widespread use of pesticides to protect agricultural products around the world and the accumulation of residues of these substances in plant tissue, most of the products that have been exposed to pesticides contain amounts of pesticide ...
Fatemeh Nasiri   +3 more
doaj   +1 more source

Determination of Pesticide Residues in Sour Cherry used in the Sour Fruit Juice Production in Tokat provinces

open access: yesTurkish Journal of Agriculture: Food Science and Technology, 2020
Sour cherry (Prunus cerasus L.) (Rosaceae) is a spring fruits. It is not preferred to be consumed as fresh because it is sour, but it is extremely beneficial for human health. In addition to fresh consumption, it is used in the production of fruit juice,
Tarık Balkan, Kenan Kara
doaj   +1 more source

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