Chemosensors, Free Full-Text
Por um escritor misterioso
Last updated 29 junho 2024
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Alcoholic beverages contaminated with scopolamine (SCP) are often employed for criminal purposes due to their sedative effect. The determination of the residual levels of SCP in body fluids (e.g., urine) can help to track possible victims of induced ingestions. Biological sample analysis usually requires a preconcentration step to enhance their detectability and to provide sample clean-up. Molecularly imprinted polymers (MIPs) in lieu of conventional solid sorbents represent an enhancement of selectivity, due to their specific recognition sites. Additionally, the adaptation of the solid-phase extraction (SPE) cartridge into a disposable pipette tip extraction (DPX) contributes to the miniaturization of the sample preparation step. Herein, an analytical method for the determination of SCP in synthetic urine samples via the integration of molecularly imprinted solid-phase extraction (MISPE) with DPX as a preconcentration step prior to capillary electrophoresis analysis (also known as MISPE-DPX-CE) is presented. The extraction and elution steps were optimized using a factorial design. Using the optimized conditions, a preconcentration factor of 20 was obtained, leading to a working range of 0.5–6 µM with LOD of 0.04 µM and repeatability of 6.4% (n = 7) and adequate recovery values (84 and 101%) The proposed MISPE-DPX-CE approach was successfully applied to selective extraction, preconcentration, and determination of SCP in synthetic urine samples.
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Optical chemosensors for environmental monitoring of toxic metals
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Full article: A biacylhydrazone-based chemosensor for fluorescence
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The enteric nervous system
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Chemosensors, Free Full-Text
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Fluorescent chemosensors: the past, present and future - Chemical
Novel Chemosensor for the Visual Detection of Copper(II) in
![Chemosensors, Free Full-Text](https://pubs.acs.org/cms/10.1021/acsomega.8b01717/asset/images/medium/ao-2018-01717z_0001.gif)
Fluorescent Chemosensors for Various Analytes Including Reactive
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chemosensor
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Recent progress in chemosensors based on pyrazole derivatives
![Chemosensors, Free Full-Text](https://journals.physiology.org/cms/10.1152/physrev.00039.2019/asset/images/medium/prv-00039-2019r01.png)
Carotid body chemoreceptors: physiology, pathology, and
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