Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diagnosing Acidosis and Alkalosis01:24

Diagnosing Acidosis and Alkalosis

Diagnosing acid-base imbalances involves systematically analyzing arterial blood samples, focusing on three key measurements: pH, bicarbonate (HCO3−) concentration, and carbon dioxide partial pressure (PCO2). This analysis follows a four-step process that helps identify the imbalance's underlying cause and nature.
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
Next, the PCO2  and HCO3−  values are examined to...
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Potentiometry: Membrane Electrodes01:15

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...
Titration of Polyprotic Base with a Strong Acid01:18

Titration of Polyprotic Base with a Strong Acid

The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important. 
Potentiometry: Overview01:06

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...

You might also read

Related Articles

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

Sort by
Same author

Study and voltammetric determination of fipronil in bovine lactose-free milk by differential pulse voltammetry using a carbon paste electrode.

Analytical methods : advancing methods and applications·2023
Same author

Direct determination of boscalid in grape samples by differential pulse voltammetry using a carbon paste electrode.

Analytical methods : advancing methods and applications·2021
Same author

Physical properties of water near a gold surface: a nanorheological analysis.

Chemphyschem : a European journal of chemical physics and physical chemistry·2010
See all related articles

Related Experiment Video

Updated: Jun 28, 2026

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
10:28

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Evaluation of a high sensitivity PbO(2) pH-sensor.

Alexandre Correa Lima1, Adriana Aparecida Jesus, Mário Alberto Tenan

  • 1Laboratório de Pesquisa em Química Analítica e Físico-Química/Núcleo de Ciências Ambientais, Universidade de Mogi das Cruzes, Mogi das Cruzes, SP, Brazil.

Talanta
|October 31, 2008
PubMed
Summary
This summary is machine-generated.

A novel potentiometric pH-electrode using a lead dioxide-paraffin matrix on graphite offers high sensitivity in acidic conditions. This new electrode shows a strong correlation with conventional glass electrodes for complex samples.

Related Experiment Videos

Last Updated: Jun 28, 2026

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
10:28

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Area of Science:

  • Electrochemistry
  • Analytical Chemistry
  • Materials Science

Background:

  • Accurate pH measurement is crucial in various scientific and industrial applications.
  • Conventional glass pH electrodes have limitations, particularly in certain sample matrices or conditions.
  • Development of alternative, high-performance pH sensing materials is an ongoing research area.

Purpose of the Study:

  • To introduce a new high-sensitivity potentiometric pH-electrode.
  • To evaluate the electrode's performance, particularly in the acidic pH range.
  • To compare its efficacy against established pH measurement technologies.

Main Methods:

  • Fabrication of a potentiometric electrode using a lead dioxide-paraffin matrix deposited on graphite.
  • Investigation of electrode variables at a fixed ionic strength (0.5 mol L⁻¹).
  • Potentiometric measurements to determine the relationship between electric potential difference and solution pH.

Main Results:

  • The electrode demonstrated a linear response between pH 1.2 and 7.5.
  • Achieved a high sensitivity with a slope exceeding 100 mV/decade.
  • Obtained a conditional electric potential of approximately 1250 mV.
  • Exhibited strong correlation with conventional glass pH-electrode performance in complex samples.

Conclusions:

  • The proposed PbO2-paraffin/graphite electrode is a viable alternative for potentiometric pH sensing.
  • Its high sensitivity and performance in acidic regions make it suitable for complex sample analysis.
  • The electrode's simple construction and comparable results to glass electrodes highlight its practical potential.