Results 31 to 40 of about 4,415 (184)

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

Simultaneous Determination of 76 Veterinary Drugs and Their Metabolites in Pork by QuEChERS-Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry

Shipin gongye ke-ji, 2023
In order to improve the efficiency of the detection of multiple veterinary drug residues in pork, a method for the simultaneous determination of 5 types of 76 veterinary drugs and their metabolites residues in pork, including quinolones, sulfonamides ...
Yanlei WU, Min SU, Chunjie ZHOU, Yuan TIAN, Min WANG   +4 more
doaj   +1 more source

Application of QuEChERS for Determining Xenobiotics in Foods of Animal Origin [PDF]

Journal of Analytical Methods in Chemistry, 2017
The use of pesticides and veterinary drugs results in the appearance of residues of xenobiotics in foods. Thus, several methods have been developed for monitoring them; however, most are tedious and expensive. By contrast, the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) methodology involves a microextraction that yields small samples and
Coralia V. Garcia, Ahmed Gotah
openaire   +3 more sources

Residue Analysis of Insecticides in Potatoes by QuEChERS-dSPE/UHPLC-PDA [PDF]

Foods, 2020
Insecticides are broadly applied in agriculture to defend crops from illnesses and pest attacks, consequently guaranteeing high production. However, their residual deposits in food products are becoming a main concern with regard to human consumption. As such, sensitive analytical methods should be developed to assess, prevent and control insecticide ...
Reis, Débora, Silva, Pedro, Perestrelo, Rosa, Câmara, José S.   +3 more
openaire   +4 more sources

QuEChER method for air microbiological monitoring in hospital environments

The Journal of Infection in Developing Countries, 2020
Introduction: Nosocomial pathogens have become a priority issue for public health, since they are responsible for increased morbidity and mortality in hospitalized patients and the development of multi-resistant microorganisms, as well. Recent studies found strong evidence that airborne transmission plays a key role in many nosocomial infections. Thus,
Tavera Busso, Iván, Herrera, Florencia, Tames, María Florencia, Gonzalez Gasquez, Ignacio, Camisassa, Lilia Norma, Carreras, Hebe Alejandra   +5 more
openaire   +5 more sources

Gas chromatography–mass spectrometry determination of deltamethrin in food

Учёные записки Казанского университета: Серия Естественные науки, 2021
The article presents the results of the determination of the synthetic pyrethroid deltamethrin in raw food and various food products by gas chromatography with mass spectrometric detection (GC–MS).
I.M. Fitsev, E.R. Rakhmetova, A.G. Mukhammetshina, K.E. Burkin, O.V. Shlyamina   +4 more
doaj   +1 more source

Application of QuEChERS method for extraction of functional compounds [PDF]

SN Applied Sciences, 2020
Barberry has valuable compounds with high functional properties such as berberine. In this study, the QuEChERS method was applied for the extraction of berberine, phenolic, and antioxidant compounds of B.integerrima stem and compared with the maceration method.
Mozhdeh Sarraf, Adel Beig-babaei, Sara Naji-Tabasi   +2 more
openaire   +1 more source

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

Validasi dan Perbandingan Metode QuEChERS EN 15662:2008 dan AOAC 2007.01 untuk Analisis Residu Pestisida pada Kentang (Solanum tuberosum L.) Menggunakan LC-MS/MS

Rekayasa Hijau: Jurnal Teknologi Ramah Lingkungan
ABSTRAK Residu pestisida pada kentang dapat membahayakan kesehatan jika melebihi batas aman, sehingga diperlukan metode analisis yang akurat. Penelitian ini bertujuan untuk memvalidasi metode QuEChERS EN 15662:2008 dan QuEChERS AOAC 2007.01 untuk ...
Cantikha Fortuna Yesan, Andi Nuraliyah, Andi Nuraliyah, Lisa Adhani, Lisa Adhani   +4 more
doaj   +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