Results 41 to 50 of about 13,634 (233)

Implementation of the methodology QuEChERS in the residual pesticide analysis in white corn (Zea mays)

open access: yesTemas Agrarios, 2015
The use of pesticides on maize crops during and after harvest constitutes a serious health and environmental risk if its prevalence remains during the consumption line.
Martha I. Páez, Jina M. Martínez
doaj   +1 more source

Determination of pesticides in fruit and fruit juices by chromatographic methods. An overview [PDF]

open access: yes, 2011
In order to combat a variety of pests, pesticides are widely used in fruits. Several extraction procedures (liquid extraction, single drop microextraction, microwave-assisted extraction, pressurized liquid extraction, supercritical fluid extraction ...
Delerue-Matos, Cristina   +3 more
core   +1 more source

Determination of 34 Insecticide Residues in Vegetables by QuEChERS-High-Performance Liquid Chromatography Triple Quadrupole Linear Ion Trap Tandem Mass Spectrometry

open access: yesShipin gongye ke-ji
This article established a rapid detection method for 34 pesticides in vegetables by combining QuEChERS purification method with high-performance liquid chromatography triple quadrupole linear ion trap tandem mass spectrometry. The samples were extracted
Jingyang LUO   +5 more
doaj   +1 more source

Development and validation of a GC-ECD method for pesticide residue detection in flour [PDF]

open access: yesMakedonsko Farmacevtski Bilten
This study aimed to optimize and validate a rapid, reliable and accurate method for quantitative determination of pesticide residues in flour matrix.
Margarita Timofejeva   +2 more
doaj   +1 more source

Determination of fenpropathrin residue by QuEChERS method and GC/MS [PDF]

open access: yesArthropods, 2022
Chemical pesticides are used worldwide to control pests. This study investigated the residues of the pesticide fenpropathrin in greenhouse tomatoes (Vendor variety).
Bahareh Rafiei, Seyed Reza Bastan
doaj  

Analysis of UV ink photoinitiators in packaged food by fast liquid chromatography at subambient temperature coupled to tandem mass spectrometry [PDF]

open access: yes, 2016
A fast method of liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) was developed for the analysis of eleven UV ink photoinitiators in packaged food.
Galcerán Huguet, M. Teresa   +3 more
core   +1 more source

DETERMINAÇÃO DE MULTIRRESÍDUOS DE AGROTÓXICOS EM MÉIS PRODUZIDOS NA REGIÃO DO TRIÂNGULO MINEIRO POR UHPLC-MS/MS

open access: yesQuímica Nova
Excessive use of pesticides can lead to the accumulation of residues in different parts of plants, endangering various species and contaminating foods.
Renata A. G. Silva, Anizio M. Faria
doaj   +1 more source

Pressurized Liquid Extraction (PLE) and QuEChERS evaluation for the analysis of antibiotics in agricultural soils

open access: yesMethodsX, 2020
Vinasse, a liquid waste which originates from the production of ethanol fuel from sugarcane, has been widely used as soil amendment in Brazil. An important concern that arises from vinasse reuse is the dissemination of antibiotics to the environment ...
Josiel José da Silva   +5 more
doaj   +1 more source

SWIEET—a salt-free alternative to QuEChERS

open access: yesAnalytical 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   +4 more
openaire   +2 more sources

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment [PDF]

open access: yes, 2013
Gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) using a triple quadrupole (QqQ) analyzer has in the last few years become a powerful technique for the determination of pesticide residues due to its robustness, and excellent sensitivity ...
Beltran Arandes, Joaquin   +4 more
core   +1 more source

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