Results 41 to 50 of about 115,809 (264)

Development of Green and Facile Sample Preparation Method for Determination of Seven Neonicotinoids in Fresh Vegetables, and Dissipation and Risk Assessment of Imidacloprid and Dinotefuran

Foods
A facile procedure for extracting and determining seven neonicotinoids was developed. Water was the only extraction solvent without phase separation and cleanup steps.
Osama I. Abdallah, Rania M. Abd El-Hamid, Nevein S. Ahmed, Saleh S. Alhewairini, Sherif B. Abdel Ghani   +4 more
doaj   +1 more source

Bifenthrin Residues in Table Grapevine: Method Optimization, Dissipation and Removal of Residues in Grapes and Grape Leaves

Plants
The QuEChERS method was adjusted to determine bifenthrin residues in grapes and grape leaves. Extraction and cleanup procedures were optimized to decrease co-extracted materials and enhance the detection of bifenthrin.
Saleh S. Alhewairini, Rania M. Abd El-Hamid, Nevein S. Ahmed, Sherif B. Abdel Ghani, Osama I. Abdallah   +4 more
doaj   +1 more source

GC-MS and LC-MS Pesticide Analysis of Black Teas Originating from Sri Lanka, Iran, Turkey, and India

Toxics, 2022
The purpose of this study is to investigate pesticide residues in the imported and domestic tea sold in Turkey and to detect their compliance with maximum residue limits (MRL) and Acceptable Daily Intake (ADI).
Kasim Takim, Mehmet Emin Aydemir
doaj   +1 more source

Exploiting pH-Regulated Dimer-Tetramer Transformation of Concanavalin A to Develop Colorimetric Biosensing of Bacteria

Scientific Reports, 2017
Gold nanoparticles (AuNPs) aggregation-based colorimetric biosensing remains a challenge for bacteria due to their large size. Here we propose a novel colorimetric biosensor for rapid detection of Escherichia coli O157:H7 (E.
Xiahong Xu, Yuwei Yuan, Guixian Hu, Xiangyun Wang, Peipei Qi, Zhiwei Wang, Qiang Wang, Xinquan Wang, Yingchun Fu, Yanbin Li, Hua Yang   +10 more
doaj   +1 more source

Guideline for handling pesticide residues in Czech organic production [PDF]

, 2013
This document was prepared in the project «Development of guidelines for the use of pesticide analysis in organic inspection in the Czech Republic (sampling, evaluation and interpretation)». At the beginning of this project, a workshop with stakeholders
Bickel, Regula, Huber, Beate, Speiser, Bernhard, Urban, Jiri   +3 more
core  

The Mayflies, or Ephemeroptera, of Illinois. B. D. Burks, 1975 reprint of Bulletin of the Illinois Natural History Survey, Vol. 26, 1953. Entomological Reprint Specialists, Los Angeles, California, viii + 216 p., 395 figs. $15.00. [PDF]

, 2017
(excerpt) The continuing demand for general references and aids to identification of Ephemeroptera has undoubtedly prompted the recent reprinting of The Mayflies. . . of Illinois. A two-page preface by George F. Edmunds, Jr.
McCafferty, W. P
core   +2 more sources

Investigation of safety and efficacy of febantel and fenbendazole in fish and exposure assessment

Applied Biological Chemistry
Fish are susceptible to blood-sucking parasite infections, which cause severe anemia, dyspnea, and ultimately death. However, veterinary drugs available for fish to treat such infectious diseases are lacking; thus, livestock drugs have been repurposed as
Min Ji Kim, Ji Young Kim, Dong Woo Shin, Hyun-Kyung Kim   +3 more
doaj   +1 more source

Temporal Trends, Multiple Residue Incidence, and Chronic Health Risk of Pesticides in Egyptian Onions: A Four-Year Market Surveillance

Journal of Xenobiotics
This study analyzed 5731 Egyptian onion samples collected from 2021 to 2024 to detect 430 pesticide residues and evaluate occurrence patterns, EU Maximum Residue Limits (MRLs) compliance, multiple residue prevalence, and consumer health implications. The
Farag Malhat, Shokr Shokr, Sara Heikal, Nour El-Hoda Zidan   +3 more
doaj   +1 more source

Pesticide Residues Research [PDF]

, 1973
Background paper describing the UNDP's response to four project proposals submitted by the IAEA and FAO regarding pesticide research, training, residues, and integrated pest control. Also contains a comment on the paper from FAO. Agenda item presented at
United Nations Development Programme
core  

Multiclass Pesticide Residue Analysis in Fruit and Vegetable Samples by Combining Acetone-Based Salting-Out Assisted Extraction with Dispersive Liquid-Liquid Microextraction [PDF]

, 2021
Bezuayehu Tadesse Negussie, Simiso Dube, Mathew Muzi Nindi   +2 more
openalex   +1 more source