Results 41 to 50 of about 9,324 (214)

Determination of chloramphenicol residue in poultry eggs by QuEChERS combined with high performance liquid chromatography-tandem mass spectrometry

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, WANG Peifeng, NIE Chen, HAN Jingjing, QIU Fang, ZHANG Xiaomei, REN Yanjie, GUO Yahui   +7 more
doaj   +1 more source

Use of QuEChERS as a manual and automated high-throughput protocol for investigating environmental matrices [PDF]

, 2022
Data for manuscript titled 'Use of QuEChERS as a manual and automated high-throughput protocol for investigating environmental ...
Hunter, Ann, Barrow, Mark. P, Barrow, Mark P., van Keulen, Geertje, Desbrow, Claire, Godfrey, A. Ruth, Gravell, Anthony, Townsend, Rachel, Dunscombe, Jonathan   +8 more
core   +1 more source

Determination of 12 Mycotoxins in Seasoning Flour Products by QuEChERS-SPE-Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry

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, Lihua HAO, Jing MA, Runxin WEI, Xiaoming LI, Wenting FAN, Shuyan LU   +6 more
doaj   +1 more source

Micro‐QuEChERS Extraction for Broad‐Spectrum LC‐QQQ‐MS Quantification of Nitazene Analogs in Plasma: A Validated Method With Casework Application

Drug Testing and Analysis, EarlyView.
Micro‐QuEChERS sample preparation coupled to LC‐QQQ‐MS enabled sensitive quantification of nitazene analogs in 100 μL of plasma. The validated method provided low detection limits and was successfully applied to an authentic intoxication case involving N‐pyrrolidino protonitazene, supporting clinical and forensic toxicology workflows.
Karla A. O. Souza, Náthaly C. B. F. Santos, Rafael Lanaro, Sara E. Walton, Alex J. Krotulski, Barry K. Logan, Mauricio Yonamine, Jose Luiz Costa   +7 more
wiley   +1 more source

SWIEET—a salt-free alternative to QuEChERS

Analytical and Bioanalytical Chemistry
AbstractThe efficient extraction of various analytes from a wide spectrum of matrices with organic solvents is still a great challenge in analytical chemistry. Especially polar and charged compounds are hard to extract in combination with neutral analytes of intermediate to low polarity. The QuEChERS method is often chosen and has been adapted not only
Nadja Kalinke, Pascal Stopper, Luca Völkl, Florian Diehl, Carolin Huhn   +4 more
openaire   +2 more sources

Pesticide Analysis in Vegetables Using QuEChERS Extraction and Colorimetric Detection [PDF]

, 2015
A novel combination of extraction and detection methods is demonstrated for pesticide residue analysis in vegetable samples. Acetylcholinesterase (AChE) inhibition was used as a simple colorimetric test for organophosphates/carbamates (OP/C), and was ...
Barahona, D., Neufeld, D. S. G., Åkerson, N.   +2 more
core   +1 more source

Determination of 44 Organic Pollutants in Groundwater by Gas Chromatography-Triple Quadrupole Mass Spectrometry

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

Production of bioethanol from residual barley and utilization of fermentation co‐products in animal nutrition

Environmental Progress &Sustainable Energy, EarlyView.
Abstract The search for sustainable alternatives for bioethanol production has encouraged the valorization of agro‐industrial residues. This study evaluated the use of residual barley as a feedstock for bioethanol production and as a potential ingredient for ruminant feed.
Gabrielle Fusiger Berwian, Arthur de Almeida Rebechi, Jéssica Mulinari, Jaqueline Garda‐Buffon, Luciane Maria Colla   +4 more
wiley   +1 more source

Aplicação de metodologia QuEChERS para análise de alimentos [PDF]

, 2019
Due to the problems associated with human and environmental contamination by chemical residues from farming, the development of efficient methods to analyze those residues is essential to control the abusive and excessive use.
Donzelli Neto, João
core   +1 more source

Determination of 214 pesticide residues in green vegetables using QuEChERS-ultra high performance liquid chromatography coupled with quadrupole time of flight mass spectrometry

Zhongguo shipin weisheng zazhi, 2020
Objective A method for the determination of 214 pesticide residues in green vegetables by QuEChERS using ultra high performance liquid chromatography coupled with quadrupole time of flight mass spectrometry was established.
Feng ZHU, Jie YU, Zongli HUO, Hualiang LIU, Hao ZHANG, Deye LIU, Wenliang JI   +6 more
doaj   +1 more source