Results 31 to 40 of about 641 (161)

Bench‐Stable Electrophilic Reagents for the Direct Di‐ and Trifluoroethylthiolation of Indoles

Advanced Synthesis &Catalysis, Volume 365, Issue 20, Page 3438-3443, October 24, 2023., 2023
Abstract Two saccharine‐based electrophilic reagents were developed for the direct introduction of SCH2CF3 and SCH2CF2H motifs via a C−S bond forming reaction. Their large‐scale preparation and reactivity performance has been carefully examined, enabling access to a series of indoles through open‐flask reactions.
Paula Casasús, Jordi Mestre, Miguel Bernús, Sergio Castillón, Omar Boutureira   +4 more
wiley   +1 more source

The certification of fipronil sulfone and the sum of fipronil and fipronil sulfone expressed as fipronil in egg powder ERM-BB125 [PDF]

, 2020
This report describes the production of the ERM-BB125, which is an egg material certified for the mass fraction of fipronil sulfone and the sum of fipronil and fipronil sulfone expressed as fipronil.
HARBECK Stefan, SHEGUNOVA Penka, SEGHERS John, DABRIO RAMOS Marta, EMTEBORG Hakan   +4 more
core   +1 more source

The 2021 European Union report on pesticide residues in food

EFSA Journal, Volume 21, Issue 4, April 2023., 2023
Abstract Under European Union legislation (Article 32, Regulation (EC) No 396/2005), EFSA is to provide an annual report assessing the pesticide residue levels in foods on the European market. In 2021, 96.1% of the overall 87,863 samples analysed fell below the maximum residue level (MRL), 3.9% exceeded this level, of which 2.5% were non‐compliant, i.e.
European Food Safety Authority (EFSA), Luis Carrasco Cabrera, Giulio Di Piazza, Bruno Dujardin, Paula Medina Pastor   +4 more
wiley   +1 more source

Rapid and Sensitive On-Site Detection of Fipronil in Foods Using Evanescent Wave Fluorescent Immunosensor

Chemosensors, 2023
Fipronil (FIP), a broad-spectrum phenylpyrazole insecticide, is highly toxic and threatens human health and ecological balance. Developing convenient, rapid, portable analytical technology for on-site and high-frequency testing of FIP is essential to ...
Yujing Li, Wenjuan Xu, Jingjing Liu, Erjing Zhang, Hejie Li, Yan Zhang, Jing Zhang, Chunsheng Li, Xiaoguang Zhang   +8 more
doaj   +1 more source

Prioritizing Pesticides of Potential Concern and Identifying Potential Mixture Effects in Great Lakes Tributaries Using Passive Samplers

Environmental Toxicology and Chemistry, Volume 42, Issue 2, Page 340-366, February 2023., 2023
Abstract To help meet the objectives of the Great Lakes Restoration Initiative with regard to increasing knowledge about toxic substances, 223 pesticides and pesticide transformation products were monitored in 15 Great Lakes tributaries using polar organic chemical integrative samplers.
Luke C. Loken, Steven R. Corsi, David A. Alvarez, Gerald T. Ankley, Austin K. Baldwin, Brett R. Blackwell, Laura A. De Cicco, Michele A. Nott, Samantha K. Oliver, Daniel L. Villeneuve   +9 more
wiley   +1 more source

Muscarinic acetylcholine receptor activation synergizes the knockdown and toxicity of GABA‐gated chloride channel insecticides

Pest Management Science, Volume 78, Issue 11, Page 4599-4607, November 2022., 2022
Activation of muscarinic acetylcholine receptors in conjunction with gamma‐amino butyric acid inhibiting insecticides results in enhanced knockdown and mortality. Target‐site synergism within the insect nervous system may play a role in insect pest management with the development of selective and effective chemistries.
Na Xie, Aaron D. Gross
wiley   +1 more source

Scientific support for preparing an EU position in the 53rd session of the codex committee on pesticide residues (CCPR)

EFSA Journal, Volume 20, Issue 9, September 2022., 2022
Abstract EFSA received a request from the European Commission to provide support for the preparation of the EU position for 53rd Session of the Codex Committee on Pesticide Residues (CCPR). In 2021, JMPR evaluated 38 active substances with regard to their toxicological properties and/or the setting of Codex Maximum Residue Limits (CXLs) (acetamiprid ...
EFSA (European Food Safety Authority)
wiley   +1 more source

Non-detection of honeybee hive contamination following Vespula wasp baiting with protein containing fipronil. [PDF]

PLoS ONE, 2018
Introduced wasps (Vespula germanica and V. vulgaris) are costly invertebrate pests in New Zealand, with large impacts on the local ecology and economy.
Eric D Edwards, Ethan F Woolly, Rose M McLellan, Robert A Keyzers   +3 more
doaj   +1 more source

Pesticide trends in a tailwater recovery system in the Mississippi Delta

Agrosystems, Geosciences &Environment, Volume 5, Issue 4, 2022., 2022
Abstract Tailwater recovery (TWR) systems are an important best management practice (BMP) used to address both water quality and quantity issues in the Mississippi Delta region. Tailwater recovery systems are surface water capture‐and‐irrigation reuse systems using a combination of ditches to capture surface water, an on‐farm storage (OFS) reservoir to
Amanda M. Nelson, Matthew T. Moore, Lindsey M. Witthaus   +2 more
wiley   +1 more source

Rapid Screening of 352 Pesticide Residues in Chrysanthemum Flower by Gas Chromatography Coupled to Quadrupole‐Orbitrap Mass Spectrometry with Sin‐QuEChERS Nanocolumn Extraction

Journal of Analytical Methods in Chemistry, Volume 2022, Issue 1, 2022., 2022
To analyze pesticide residues, GC coupled with quadrupole‐Orbitrap MS (GC‐Orbitrap‐MS) has become a powerful tool because of its unique characteristics of accurate mass full‐spectrum acquisition, high resolution, fast acquisition rates, and overcoming matrix interference. This paper presents an efficiency evaluation of GC‐Orbitrap‐MS for identification
Yuanyuan Wang, Zhijuan Meng, Chunyan Su, Sufang Fan, Yan Li, Haiye Liu, Xuan Zhang, Pingping Chen, Yunyun Geng, Qiang Li, Eliseo Herrero Hernandez   +10 more
wiley   +1 more source