Buscar
Mostrando ítems 21-28 de 28
Molecularly Imprinted Polymer Micro- and Nano-Particles. A review
(MDPI, 2020)
In recent years, molecularly imprinted polymers (MIPs) have become an excellent solution to the selective and sensitive determination of target molecules in complex matrices where other similar and relative structural ...
Recent Advances in Extraction and Stirring Integrated Techniques
(MDPI, 2017)
The extraction yield of a microextraction technique depends on thermodynamic and kinetics factors. Both of these factors have been the focus of intensive research in the last few years. The extraction yield can be increased ...
Melamine Sponge Functionalized with Urea-Formaldehyde Co-Oligomers as a Sorbent for the Solid-Phase Extraction of Hydrophobic Analytes
(MDPI, 2018)
A new procedure for the functionalization ofmelamine sponge (MeS) with urea-formaldehyde
(UF) co-oligomers is put forward. The procedure differs from the typical synthesis of the UF
co-polymer, as it employs a base-catalyzed ...
Determination of the Three Main Components of the Grapevine Moth Pest Pheromone in Grape-Related Samples by Headspace-Gas Chromatography-Mass Spectrometry
(MDPI, 2017)
The grapevine moth (Lobesia botrana) is the most significant pest of viticulture. This article reports the development of an analytical method that allows the instrumental determination of the three main pheromone components ...
A paper-based polystyrene/nylon Janus platform for the microextraction of UV filters in water samples as proof-of-concept
(Springer, 2021)
A new mix-mode cellulose-based sorptive phase is described that combines two different polymeric domains (i.e., nylon and polystyrene), thus providing simultaneous hydrophilic and hydrophobic features as a result. By analogy ...
Unmodified cellulose filter paper, a sustainable and affordable sorbent for the isolation of biogenic amines from beer samples
(Elsevier, 2021)
While current trends in Green Analytical Chemistry aim at reducing or simplifying sample treatment, food usually comprises complex matrices where direct analysis is not possible in most cases. In this context, sample ...
Polydopamine inner wall-coated hypodermic needle as microextraction device and electrospray emitter for the direct analysis of illicit drugs in oral fluid by ambient mass spectrometry
(Elsevier, 2022)
In this article, polydopamine inner wall-coated hypodermic needles (PDA-HNs) are evaluated as both microextraction devices and electrospray ionization (ESI) emitters for determining selected illicit drugs (methamphetamine, ...
One-pot synthesis of graphene quantum dots and simultaneous nanostructured self-assembly via a novel microwave-assisted method: impact on triazine removal and efficiency monitoring
(Royal Society of Chemistry, 2018)
One-step methods for fabricating green materials endowed with diverse functions is a challenge to be overcome in terms of reducing environmental risk and cost. We report a fast and easy synthesis of multifunctional materials ...