Results 211 to 220 of about 19,418 (264)

Development and Validation of a modified QuEChERS coupled to Liquid Chromatography-Tandem Mass Spectrometry for the Rapid and Accurate Determination of Acrylamide in Cereal-Based Baby Foods.

Journal of AOAC International, 2023
BACKGROUND With the widespread consumption of cereal-based baby food by children, acrylamide contamination is a prevalent risk that may have carcinogenic consequences.
Abdelrahman M Marzouk, Amr H Shendy, AlaaEldean Fathy Ahmed Aboelhassan, A. Gomaa, M. El-shahat   +4 more
semanticscholar   +1 more source

ANALİZ ÖNCESİ NUMUNE HAZIRLAMA YÖNTEMİ OLARAK: QuEChERS

Veteriner Farmakoloji ve Toksikoloji Derneği Bülteni, 2023
Karmaşık yapılı matrislerden, numune hazırlaması ve analizi çok sayıda işlem gerektirmesinin yanında çok miktarda masrafa neden olmaktadır. Hem numune hazırlama aşamalarını hızlandırmak ve kolaylaştırmak, hem de ortaya çıkan masrafı azaltmak için çok sayıda örnek hazırlama yöntemi ortaya konmuştur.
Hikmet Özgün İŞCAN, Abdurrahman AKSOY   +1 more
openaire   +2 more sources

Determination of multi-pesticide residues in honey with a modified QuEChERS procedure followed by LC-MS/MS and GC-MS/MS

Journal of Apicultural Research, 2022
This paper presents a modified QuEChERS method to determine 346 pesticide residues in honey by LC/MS-MS and GC/MS-MS. Acetate buffered acetonitrile extraction followed by dispersive SPE clean-up with C18-E, PSA and MgSO4 sorbents were used for sample ...
Beste Oymen, Süleyman Aşır, Deniz Türkmen, A. Denizli   +3 more
semanticscholar   +1 more source

Pesticide residues in dates using a modified QuEChERS method and GC-MS/MS

Food Additives & Contaminants, Part B, 2022
The aim of this study was to develop a convenient, fast, effective and safe analytical method (QuEChERS) to determine 198 pesticide residues in multi-source date palm fruits using gas chromatography-tandem mass spectrometry (GC-MS/MS).
Azimeh Khezri, M. Ansari, M. Amirahmadi, Mehdi Shahidi, N. Mohamadi, M. Kazemipour   +5 more
semanticscholar   +1 more source

การตรวจสอบความใช้ได้ของวิธีการวิเคราะห์คัดกรองสารเสพติดในน้ำวุ้นลูกตาด้วยเทคนิคการสกัด QuEChERS และตรวจด้วย LC-MS/MS

2023
น้ำวุ้นลูกตาถูกนำมาใช้เป็นตัวอย่างทางเลือก เนื่องจากทนต่อการเปลี่ยนแปลงหลังการเสียชีวิต รวมถึงมีส่วนประกอบที่เป็นเซลล์น้อยจึงสามารถนำมาเตรียมตัวอย่างได้ง่าย การเตรียมตัวอย่างทางนิติพิษวิทยาสามารถเตรียมได้หลายวิธี เช่น Solid Phase Extraction (SPE) และLiquid-Liquid Extraction (LLE) แต่มีข้อเสียคือใช้เวลาในการเตรียมนาน มีค่าใช้จ่ายสูงและใช้สารที่เป็นอ ...
openaire   +1 more source

Método Quechers

Portal de Vídeo Didáctico de la Universidad de Sevilla
El presente vídeo didáctico trata sobre la técnica de extracción avanzada de analitos de una muestra: método QuEChERS. QuEChERS es el acrónimo de “rápido, fácil, barato, efectivo, resistente y seguro” en inglés “Quick, Easy, Cheap, Effective, Rugged and Safe”. Es un tipo de extracción en fase sólida dispersiva (d-SPE) desarrollada originalmente para la
Julia Martín Bueno, Laura Martín Pozo, Noelia García Criado, Carmen Mejías Padilla, Esteban Alonso Álvarez, Irene Aparicio Gómez, Juan Luis Santos Morcillo, Marina Arenas Molina   +7 more
openaire   +1 more source

Evolution and applications of the QuEChERS method

TrAC Trends in Analytical Chemistry, 2015
Abstract It is widely recognized that the QuEChERS (quick, easy, cheap, effective, rugged, and safe) method is relevant in pesticide residue analysis. Many official laboratories around the globe are routinely using it due to the advantages encapsulated in its name. However, the frontiers of the application of QuEChERS are not yet established.
M.Á. González-Curbelo, B. Socas-Rodríguez, A.V. Herrera-Herrera, J. González-Sálamo, J. Hernández-Borges, M.Á. Rodríguez-Delgado   +5 more
openaire   +1 more source

Application of QuEChERS Method in Spray Deposition Studies

Madras Agricultural Journal, 2012
Pesticides are widely used in agriculture for the management of pests (weeds, insects or pathogens). They are generally applied as a spray to cover the target (e.g. an insect, leaf surfaces or part of a plant) with pesticide-laden droplets. Spray may, however, be lost to non- target areas within a crop through deposition on to the soil or on non-target
Jayashree G C, Anantha Krishnan D
openaire   +1 more source

Polycyclic aromatic hydrocarbons in teas using QuEChERS and HPLC-FLD

Food Additives & Contaminants: Part B, 2018
Polycyclic aromatic hydrocarbons (PAHs) are food-processing contaminants considered to be carcinogenic and genotoxic. Due to its drying process stage, teas may be contaminated with PAHs. The aim of the study was to validate an analytical method involving QuEChERS and HPLC-FLD for the determination of PAH4 in teas and evaluate the contamination levels ...
Silvia A V, Tfouni, Raquel M, Reis, Kamille, Kamikata, Fernanda M L, Gomes, Marcelo A, Morgano, Regina P Z, Furlani   +5 more
openaire   +2 more sources