Results 11 to 20 of about 4,456 (184)
PLOS ONE, 2021 This study provides a review of methods used in the determination of organochlorine pesticides (OCPs) in ginseng and compares the effectiveness of three extraction methods (Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS), a modified QuEChERS and a Fast Pesticide Extraction (FaPEx)) in the analyses of 20 OCPs in ginseng root samples. For each
Pennante Bruce-Vanderpuije +7 more
openaire +5 more sources
QuEChERS as alternative extraction procedure in doping analyses
Drug Testing and Analysis, 2023 AbstractQuEChERS is a dispersive solid phase extraction commonly applied in food analysis for residues, such as pesticides or mycotoxins for more than 20 years. Due to the quick and easy sample preparation procedure, a QuEChERS method based on ammonium acetate combined with formic acid in acetonitrile was tested for the preparation of urine samples for
Daniel Derwand +4 more
openaire +4 more sources
Extraction of ochratoxin A in bread samples by the QuEChERS methodology [PDF]
Food 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
Zhongguo shipin weisheng zazhi, 2023 ObjectiveTo develop a method for determination of chloramphenicol residue in poultry eggs （hen egg， duck egg， quail egg， and goose egg） using QuEChERS （Quick， Easy， Cheap， Effective， Rugged， Safe） protocols combined with high performance liquid ...
ZHAO Sa +7 more
doaj +1 more source
Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review
Molecules, 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]
Songklanakarin 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
Shipin gongye ke-ji, 2022 A method was developed for the residual quantity determination of 12 mycotoxins in seasoning flour products by QuEChERS-SPE-ultra performance liquid chromatography-tandem mass spectrometry. The samples were extracted with formic acid acetonitrile aqueous
Ziting XU +6 more
doaj +1 more source
Yankuang ceshi, 2021 BACKGROUND Organic pollutants such as organochlorine, polycyclic aromatic hydrocarbons and phthalate in groundwater are potential threats to the ecological environment and human health.
YU Lei, ZHANG Xiao-yi
doaj +1 more source
Quechers approach to the Alternaria mycotoxins detection in wheat: The recovery study [PDF]
Zbornik Matice Srpske za Prirodne Nauke, 2022 The performance of the QuEChERS extraction followed by the LC-MS/ MS analytical method was evaluated in terms of Alternaria mycotoxins recovery from the wheat.
Bursić Vojislava P. +8 more
doaj +1 more source
QuEChERS extraction of benzodiazepines in biological matrices
Journal of Pharmaceutical Analysis, 2013 Two common analytical chemical problems often encountered when using chromatographic techniques in drug analysis are matrix interferences and ion suppression. Common sample preparation often involves the dilution of the sample prior to injection onto an instrument, especially for liquid chromatography-mass spectrometry (LC-MS) analyses.
Jessica L. Westland, Frank L. Dorman
openaire +3 more sources