Results 11 to 20 of about 9,758 (222)

A comparison of the effectiveness of QuEChERS, FaPEx and a modified QuEChERS method on the determination of organochlorine pesticides in ginseng [PDF]

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 ...
Pennante Bruce-Vanderpuije, Sang-Won Park, Geun-Hyoung Choi, Park, Sang-Won, David Megson, Byung-Seok Kim, Kim, Byung-Seok, Bruce-Vanderpuije, Pennante, Jin Hyo Kim, Kim, Jin Hyo, Lee, Hyo-Sub, Hyo-Sub Lee, Song-Hee Ryu, Megson, David, Choi, Geun-Hyoung, Ryu, Song-Hee   +15 more
core   +7 more sources

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

OUSL 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, Nimsha Sevwandika Weerakkody, Pulippu Widana Yoshida Lakshani   +2 more
doaj   +2 more sources

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

Drug Testing and Analysis, Volume 18, Issue 10, Page 1296-1310, October 2026.
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   +2 more sources

Evaluation of blood impurity removal efficiency using the QuEChERS method [PDF]

Forensic Toxicology
The version of record of this article, first published in Forensic Toxicology (2025), is available online at Publisher’s website: https://doi.org/10.1007/s11419-025-00740-5Purpose: Comparison of the impurity removal efficiencies of the deproteinization ...
Nishihori, Taichi, Tokugawa, Yuri, Yoshida, Haruhi, Kuze, Haruki, Tamagawa, Hikaru, Harada, Kazuo, Matsumoto, Hiroshi, Yamamoto, Fumika   +7 more
core   +3 more sources

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 [PDF]

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   +2 more sources

A QuEChERS Cyanin based Chromogenic Method for the Sensitive Identification of MRSA from Various Food Sources and its Molecular Characterization [PDF]

Journal of Pure and Applied Microbiology
Methicillin resistant Staphylococcus aureus harbouring other virulence factors in food is a serious threat to food safety. Delayed detection of MRSA may lead to fatal consequences due to the challenging treatment methods.
Mariya Tomy, Shylaja Ramlal, M.M. Parida, Joseph Kingston   +3 more
doaj   +2 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, Sebastian Rzeppa, Sven C. Voss, Annette Zschiesche, Annekathrin M. Keiler   +4 more
openaire   +4 more sources

Extraction and determination of Benzoyl-urea insecticides in some fresh fruits using dispersive liquid phase micro-extraction and HPLC method [PDF]

Bihdāsht-i Mavādd-i Ghaz̠āyī, 2021
To improve the quality and increase the shelf life of agricultural products, many pesticides are widely used. Although the use of pesticides in agricultural applications provides a wide range of beneficial effects, overuse of these substances results in ...
J. Khandaghi, M. R. Afshar Mogaddam
doaj   +1 more source

Sixty mycotoxins in nuts and dried fruits simultaneously detected by QuEChERS combined with UPLC-Orbitrap/MS

Zhongguo shipin weisheng zazhi, 2022
ObjectiveA qualitative and quantitative method was established for the simultaneous detection of 60 mycotoxins in nuts and dried fruits.MethodsPeanuts and raisins， two typical food substrates rich in fat and sugar， were pre-processed by QuEChERS ...
WANG Wei, YU Tingting, ZHANG Li, FAN Zhiyong, JIANG Feng, WANG Huixia   +5 more
doaj   +1 more source

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, Morais, Simone, Oliva-Teles, Maria Teresa, Correia, Manuela, Delerue-Matos, Cristina, Duarte, S. C., Pena, Angelina, Lino, C. M.   +7 more
openaire   +3 more sources