Results 51 to 60 of about 6,944 (194)
Journal of the Brazilian Chemical Society, 2004 Two procedures have been proposed and compared for separation and preconcentration of trace amounts of manganese, copper, and zinc in saline samples. The procedures are based in the use of Amberlite XAD-7 and an anion-exchanger Dowex 1X8-50 loaded with ...
Korn Maria das Graças A. +4 more
doaj
Laser‐Assisted In Situ Fabrication of rGO/Bi2O3 Nanocomposites for Heavy Metal Sensing
Small, EarlyView.Rapid CO2 laser irradiation drives the in situ formation of Bi2O3 nanoplatelets within reduced graphene oxide, yielding flexible, reproducible electrodes with excellent stripping voltammetric performance toward trace heavy metals. ABSTRACT In this work, we introduce a laser‐assisted approach to synthesize reduced graphene oxide/bismuth oxide (III) (rGO/
Andy Bruno +6 more
wiley +1 more source
Vapor‐Phase Detection of Perfluoroalkyl Acids using Amplifying Fluorescent Polymers
Small Methods, EarlyView.Amplifying fluorescent fluorous polymers respond to PFAS vapors in under 5 s. The fluorophilic nature of the polymers results in strong binding and selectivity. ABSTRACT Perfluoroalkyl acids are a subclass of persistent toxic per‐ and polyfluoroalkyl substances (PFAS) whose volatility enables airborne exposure pathways that remain largely unmonitored ...
Jesús Castro‐Esteban +2 more
wiley +1 more source
Synthesis and Surface Engineering of Two‐Dimensional MXenes for Advanced Functional Applications
The Chemical Record, EarlyView.This study highlights the synthesis, surface engineering, and advanced functional applications of MXenes, emphasizing key preparation strategies that enable their use in catalysis, energy storage, sensing, and environmental remediation. Two‐dimensional MXenes (2DMxn), a rapidly expanding family of transition metal carbides, nitrides, and carbonitrides ...
Dalil N. H. Al‐Ghubairi +4 more
wiley +1 more source
Strategies for enhancing sensitivity in lateral flow assays
VIEW, EarlyView.Lateral flow assays (LFAs) are essential for cost‐effective, rapid point‐of‐care diagnostics. However, conventional colourimetric LFAs often lack the sensitivity required for low‐abundance biomarkers. This review evaluates six enhancement strategies: flow modulation, sample preconcentration, advanced reporters, chemical signal amplification, structural
Aylar Eslami Saed +3 more
wiley +1 more source
, 2014 Citation: 'relative preconcentration' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.R05274 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire +1 more source
Analytical Science Advances, Volume 7, Issue 2, December 2026.ABSTRACT A dispersive micro solid‐phase extraction method was introduced using a Schiff base‐UiO66 nanocomposite as the adsorbent in the extraction of multi‐class pesticide residues in pear, cherry, grape, and apricot juices. The extraction procedure was hyphenated with a liquid‐phase microextraction procedure, providing a high preconcentration factor ...
Behnam Hosseininezhad +5 more
wiley +1 more source
, 2014 Citation: 'group preconcentration' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.G02707 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire +1 more source
Fast and Sensitive Measurement of Off‐Flavors in Recirculating Aquaculture Systems
Rapid Communications in Mass Spectrometry, Volume 40, Issue 15, 15 August 2026.ABSTRACT Rationale Geosmin and 2‐methylisoborneol (2‐MIB) are odor‐active compounds responsible for earthy off‐flavors in fish, creating significant quality concerns in recirculating aquaculture systems (RAS). Their extremely low odor thresholds make rapid and highly sensitive detection essential for maintaining product quality and consumer acceptance ...
Pedro Martínez Noguera +5 more
wiley +1 more source
Biomedical Chromatography, Volume 40, Issue 8, August 2026.ABSTRACT Olaparib belongs to the PARP inhibitors and is widely used as an anticancer drug. Due to frequent side effects, it is usually co‐administered with an antihypertensive, such as propranolol and/or an antidiuretic, such as furosemide. In this study, a highly sensitive HPLC‐FLD method was developed for the simultaneous determination of the three ...
Georgios Kamaris +2 more
wiley +1 more source