Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

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...

Microbial Bioremediation of Uranium

Microbial Bioremediation of Uranium

Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella, which use...

Potentiometry: Overview

Potentiometry: Overview

Potentiometry is an analytical technique that measures the potential difference between two electrodes in an electrochemical cell without drawing any significant current that could alter the solution's composition. This method employs an indicator electrode, which exchanges electrons with the analyte solution, and a reference electrode with a constant potential. Each electrode is immersed in a solution comprised of two half-cells. In a conventional setup, the reference electrode serves as the...

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...

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...

Voltammetry: Stripping Methods

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Effect of Nd: YAG Laser Capsulotomy Size on Visual Acuity and Posterior Segment Outcomes: A 6-Months Follow-Up Study.

Mymensingh medical journal : MMJ·2026

Same author

Comparing skeletal and dentoalveolar effects of fixed palatal crib and bonded spurs in early management of anterior open bite associated with non-nutritive sucking habits: a randomized clinical trial.

European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry·2025

Same author

Vaginal progesterone for the prevention of preterm birth and adverse perinatal outcomes in women with a twin gestation and a short cervix (≤ 25 mm): an updated individual patient data meta-analysis.

Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2025

Same author

Bridging gaps in geriatric oral health.

British dental journal·2025

Same author

Molecular characterization of circulating infectious bursal disease viruses in chickens from different Egyptian governorates during 2023.

Virology journal·2024

Same author

Multistoried woodlot based agroforestry system for improved resource utilization and incomes for farmer.

Heliyon·2024

Search research articles

Related Experiment Video

Updated: Jun 28, 2026

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Published on: November 9, 2015

PVC membrane based potentiometric sensors for uranium determination.

S S Hassan¹, M M Ali, A M Attawiya

¹Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt.

|October 31, 2008

Summary

Two new PVC sensors detect uranyl ions using TEHP or TPTU, offering rapid, linear responses for uranium determination in various samples. These sensors show minimal interference and good recovery rates, enhancing analytical capabilities.

More Related Videos

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Published on: July 13, 2018

Related Experiment Videos

Last Updated: Jun 28, 2026

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Published on: November 9, 2015

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Published on: July 13, 2018

Area of Science:

Analytical Chemistry
Electrochemistry
Materials Science

Background:

Accurate determination of uranyl ions is crucial for environmental monitoring and nuclear fuel cycle management.
Development of selective and sensitive sensors for uranyl ions is an ongoing research area.

Purpose of the Study:

To develop and characterize two novel PVC matrix membrane sensors for the potentiometric determination of uranyl ions (UO(2)(2+)).
To evaluate the performance, selectivity, and applicability of the developed sensors in real samples.

Main Methods:

Fabrication of two PVC membrane sensors incorporating tris(2-ethylhexyl)phosphate (TEHP) or O-(1,2-dihydro-2-oxo-1-pyridyl)-N,N,N',N'-bis(tetra-methylene)uronium hexafluorophosphate (TPTU) as sensing materials.
Potentiometric measurements to assess response linearity, slope, working pH range, and operational life span.
Interference studies with various inorganic cations and application in direct determination of uranium in aqueous solutions and ores.

Main Results:

The TEHP-based sensor showed a linear response for UO(2)(2+) from 1x10(-1) to 2x10(-5) mol L(-1) with a slope of 25.0 mV/decade (pH 2.8-3.6, 4-week lifespan).
The TPTU-based sensor exhibited a linear response from 1x10(-1) to 5x10(-5) mol L(-1) with a slope of 27.5 mV/decade (pH 2.5-3.5, 6-week lifespan).
Both sensors demonstrated negligible interference from most cations, with specific interferences mitigated by pre-treatment. Direct determination in ores yielded results comparable to X-ray fluorescence.

Conclusions:

The developed PVC membrane sensors provide a reliable and sensitive method for uranyl ion determination.
The sensors offer advantages in terms of response time, operational stability, and applicability to complex matrices.
These sensors represent a valuable tool for uranium analysis in environmental and industrial settings.