Results 21 to 30 of about 2,492 (198)

The Comet Assay, a Sensitive Biomarker of Water Quality Improvement Following Adoption of Beneficial Agricultural Practices?

open access: yesEnvironmental Toxicology and Chemistry, Volume 42, Issue 10, Page 2201-2214, October 2023., 2023
Abstract Numerous actions have been undertaken by farmers to attenuate the impact of agricultural activities on aquatic ecosystems. The identification of biomarkers that respond quickly to water quality improvement could facilitate the assessment of adopted alternative practices and help maintain mobilization among stakeholders.
Andrée D. Gendron   +9 more
wiley   +1 more source

Recent advances and future trends in molecularly imprinted polymers‐based sample preparation

open access: yesJournal of Separation Science, Volume 46, Issue 12, June 2023., 2023
Molecular imprinting technology is a well‐established technique for the obtainment of tailor‐made polymers, so‐called molecularly imprinted polymers, with a predetermined selectivity towards a target analyte or structurally related compounds. Accordingly, molecularly imprinted polymers are considered excellent materials for sample preparation providing
Myriam Díaz‐Álvarez   +2 more
wiley   +1 more source

Atmospheric pressure gas chromatography-time-of-flight-mass spectrometry (APGC-ToF-MS) for the determination of regulated and emerging contaminants in aqueous samples after stir bar sorptive extraction (SBSE) [PDF]

open access: yes, 2014
This work presents the development, optimization and validation of a multi-residue method for the simultaneous determination of 102 contaminants, including fragrances, UV filters, repellents, endocrine disruptors, biocides, polycyclic aromatic ...
Arbulu   +38 more
core   +2 more sources

Challenges with the current methodology for conducting Endangered Species Act risk assessments for pesticides in the United States

open access: yesIntegrated Environmental Assessment and Management, Volume 19, Issue 3, Page 817-829, May 2023., 2023
Abstract The US Environmental Protection Agency (USEPA or the Agency) is responsible for administering the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). The Agency is also required to assess the potential risks of pesticides undergoing registration or re‐registration to threatened and endangered (i.e., listed) species to ensure ...
R. Scott Teed   +4 more
wiley   +1 more source

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

open access: yesEnvironmental 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   +9 more
wiley   +1 more source

Evaluation of a field-test kit for triazine herbicides (SensioScreen® TR500) as a fast assay to detect pesticide contamination in water samples [PDF]

open access: yes, 2003
11 pages, 3 figures, 7 tables.-- Available online Nov 16, 2002.A field-test kit (SensioScreen® TR500) for the determination of triazine herbicides in water samples has been evaluated.
Ballesteros, Berta   +4 more
core   +1 more source

Pesticide Prioritization by Potential Biological Effects in Tributaries of the Laurentian Great Lakes

open access: yesEnvironmental Toxicology and Chemistry, Volume 42, Issue 2, Page 367-384, February 2023., 2023
Abstract Watersheds of the Great Lakes Basin (USA/Canada) are highly modified and impacted by human activities including pesticide use. Despite labeling restrictions intended to minimize risks to nontarget organisms, concerns remain that environmental exposures to pesticides may be occurring at levels negatively impacting nontarget organisms. We used a
Samantha K. Oliver   +12 more
wiley   +1 more source

Development of a highly sensitive noncompetitive electrochemical immunosensor for the detection of atrazine by phage anti-immunocomplex assay [PDF]

open access: yes, 2014
The development of immunosensors for the detection of small molecules is of great interest because of their simplicity, high sensitivity and extended analytical range.
Arevalo, Fernando Javier   +5 more
core   +1 more source

The Targeted Pesticides as Acetylcholinesterase Inhibitors: Comprehensive Cross-Organism Molecular Modelling Studies Performed to Anticipate the Pharmacology of Harmfulness to Humans In Vitro

open access: yesMolecules, 2018
Commercially available pesticides were examined as Mus musculus and Homo sapiens acetylcholinesterase (mAChE and hAChE) inhibitors by means of ligand-based (LB) and structure-based (SB) in silico approaches. Initially, the crystal structures of simazine,
Milan Mladenović   +8 more
doaj   +1 more source

Toxicity of ten herbicides to the tropical marine microalgae Rhodomonas salina

open access: yesScientific Reports, 2020
Herbicide contamination of nearshore tropical marine ecosystems is widespread and persistent; however, risks posed by most ‘alternative’ herbicides to tropical marine microalgae remain poorly understood.
Marie C. Thomas   +4 more
doaj   +1 more source

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