Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Potentiometry: Types of Electrodes

Potentiometry: Types of Electrodes

Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...

Potentiometry: Membrane Electrodes

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...

Gas Chromatography: Overview of Detectors

Gas Chromatography: Overview of Detectors

Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

High-Performance Liquid Chromatography: Types of Detectors

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

Microbial Biosensors

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por

Same author

Single-center experience of interventional therapy for congenital portal-systemic shunt in children.

Frontiers in pediatrics·2026

Same author

Post-marketing safety of lecanemab: a real-world study based on FAERS database, multicenter cohort and network pharmacology.

Frontiers in psychiatry·2026

Same author

Recent Advances and Prospects of Succinate Dehydrogenase Inhibitor Acaricides.

Journal of agricultural and food chemistry·2026

Same author

Enantioselective Neurotoxicity of Pydiflumetofen in Zebrafish Embryos: <i>R</i>-Enantiomer Disrupts Neurodevelopment via Suppression of Wnt/β-Catenin Signaling.

Journal of agricultural and food chemistry·2026

Same author

Exploring the immunomodulatory mechanisms of Astragalus membranaceus in esophageal cancer treatment through network pharmacology, molecular docking, and molecular dynamics simulation.

Discover oncology·2026

Same author

Heterogeneous Visible-Light Photocatalysis in Continuous-Flow: A Synergistic Strategy for Challenging Trifluoromethylation of α, α-Diaryl Allylic Alcohols via 1,2-aryl Migration.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Search research articles

Video Experimental Relacionado

Updated: Jul 16, 2026

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Published on: September 21, 2011

Un quimiosensor fluorescente altamente selectivo y sensible para Hg2+ en una solución acuosa tampón neutral.

Xiangfeng Guo¹, Xuhong Qian, Lihua Jia

¹State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China.

Journal of the American Chemical Society

|February 26, 2004

Resumen

Se sintetizó un nuevo quimosensor fluorescente para la detección de iones de mercurio (Hg2+). Este sensor exhibe una alta selectividad y sensibilidad, con una mejora significativa de la fluorescencia en presencia de mercurio, lo que lo convierte en una herramienta prometedora para el monitoreo ambiental.

Más Videos Relacionados

An Aptamer-based Sensor for Unchelated Gadolinium(III)

An Aptamer-based Sensor for Unchelated Gadolinium(III)

Published on: January 9, 2017

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

Videos de Experimentos Relacionados

Last Updated: Jul 16, 2026

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification

Published on: September 21, 2011

An Aptamer-based Sensor for Unchelated Gadolinium(III)

An Aptamer-based Sensor for Unchelated Gadolinium(III)

Published on: January 9, 2017

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

Área de la Ciencia:

Química analítica Química analítica es la que
Ciencia de los materiales Ciencia de los materiales.
Ciencias del medio ambiente Ciencias del medio ambiente.

Sus antecedentes:

Los iones de mercurio (Hg2+) presentan riesgos ambientales y de salud significativos.
El desarrollo de métodos selectivos y sensibles de detección de Hg2+ es crucial.
Los quimiosensores fluorescentes ofrecen ventajas en sensibilidad y detección en tiempo real.

Objetivo del estudio:

Para sintetizar un nuevo quimiosensor fluorescente para la detección selectiva de Hg2+.
Para investigar las propiedades fotofísicas y el rendimiento de detección del quimiosensor sintetizado.
Para evaluar la selectividad y sensibilidad del quimiosensor hacia Hg2+ en soluciones acuosas.

Principales métodos:

Síntesis de un quimosensor fluorescente utilizando fluoróforos de aminonaftalimida y un receptor basado en piridina.
Caracterización de la estructura y propiedades del quimiosensor.
Análisis espectroscópico (espectroscopia de fluorescencia) para determinar el comportamiento de detección tras la adición de Hg2+ y otros iones metálicos.

Principales resultados:

Se sintetizó con éxito un quimiosensor fluorescente selectivo y sensible para Hg2+.
El quimiosensor demostró un aumento de aproximadamente 17 veces en el rendimiento cuántico de fluorescencia tras la unión con Hg2+.
El sensor exhibió una alta selectividad para Hg2+, con una interferencia mínima de otros iones metálicos comunes en el tampón acuoso neutro.

Conclusiones:

El chemosensor fluorescente desarrollado es eficaz para la detección selectiva y sensible de Hg2+.
La significativa respuesta de fluorescencia del quimiosensor al Hg2+ lo hace adecuado para aplicaciones de detección ambiental y biológica.
Este trabajo proporciona una plataforma valiosa para el diseño de sondas fluorescentes avanzadas para la detección de iones de metales pesados.