Results 31 to 40 of about 19,418 (264)

Analysis of pesticide residues in strawberries and soils by GC-MS/MS, LC-MS/MS and two-dimensional GC-timeof- flight MS comparing organic and integrated pest management farming [PDF]

, 2014
This study analysed 22 strawberry and soil samples after their collection over the course of 2 years to compare the residue profiles from organic farming with integrated pest management practices in Portugal.
Delerue-Matos, Cristina, Domingues, Valentina F., Fernandes, Virgínia C., Geis-Asteggiante, Lucía, Kwon, Hyeyoung, Lehotay, Steven J., Mateus, Nuno, Mol, Hans G.J., Van der Kamp, Henk   +8 more
core   +1 more source

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

Validation of a modified QuEChERS method for the extraction of multiple classes of pharmaceuticals from soils

Chemical and Biological Technologies in Agriculture, 2022
The quick, easy, cheap, effective, rugged, and safe (QuEChERS) method can be employed for multi-residue analyses instead of traditional extraction methods due to its advantages in terms of extraction time and required equipment. A modified version of the
F. Mastro, C. Cocozza, A. Traversa, Claudio Cacace, Francesca Mottola, Alessandra Mezzina, G. Brunetti   +6 more
semanticscholar   +1 more source

Improved Analytical Approach for Determination of Tropane Alkaloids in Leafy Vegetables Based on µ-QuEChERS Combined with HPLC-MS/MS

Toxins, 2022
This work presents an optimized methodology based on the miniaturization of the original QuEChERS (μ-QuEChERS) followed by liquid chromatography coupled to mass spectrometry (HPLC-MS/MS) for the determination of tropane alkaloids (TAs), atropine, and ...
Lorena González-Gómez, Sonia Morante-Zarcero, Jorge A. M. Pereira, J. Câmara, I. Sierra   +4 more
semanticscholar   +1 more source

A new and improved strategy combining a dispersive-solid phase extraction-based multiclass method with ultra high pressure liquid chromatography for analysis of low molecular weight polyphenols in vegetables [PDF]

, 2012
This paper reports on the development and optimization of a modified Quick, Easy, Cheap Effective, Rugged and Safe (QuEChERS) based extraction technique coupled with a clean-up dispersive-solid phase extraction (dSPE) as a new, reliable and powerful ...
Câmara, José S., Haesen, Nathaly, Silva, Catarina L.   +2 more
core   +1 more source

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

Determination of pesticides in the respirable fraction of airborne particulate matter by high-performance liquid chromatography–tandem mass spectrometry [PDF]

, 2017
Potential harmful effects of pesticides include risks to human health of workers involved in the wet spray application in cultivated areas. Inhalation exposure depends on several factors including pesticide concentrations in the respirable fraction of ...
Buiarelli, Francesca, Console, Carla, De Gennaro, Martina, Di Filippo, Patrizia, Laurendi, Vincenzo, Pomata, Donatella, Puri, Daniele, Riccardi, Carmela   +7 more
core   +1 more source

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

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

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, David Megson, Song‐Hee Ryu, Geun‐Hyoung Choi, Sang‐Won Park, Il‐Kyu Kim, Jin Hyo Kim, Hyo-Sub Lee   +7 more
openaire   +5 more sources

QuEChERS: a sample preparation for extraction of carbaryl from rat feces [PDF]

, 2015
Carbamate compounds are an important group of cholinesterase inhibitors. There is a need for creating awareness regarding the risks of the inadequate carbamate use in the residential areas due to potential adverse human effects.
Delerue-Matos, Cristina, Domingues, Valentina F., Júnior, Severino Alves, Paíga, Paula, Wanderley, Kaline Amaral   +4 more
core   +1 more source