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

High-Performance Liquid Chromatography: Types of Detectors01:15

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...
Complexometric Titration: Overview00:39

Complexometric Titration: Overview

Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free indicator. The...
Microbial Biosensors01:17

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...
Indicators02:39

Indicators

Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are called...
Voltammetry: Overview01:20

Voltammetry: Overview

Voltammetry is an electroanalytical technique in which the current flowing through an electrochemical cell is measured as a function of applied potential, typically under conditions of concentration polarization. The technique provides valuable information about redox-active species, and the current response is plotted as a voltammogram.
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
Precipitation Titration: Endpoint Detection Methods01:19

Precipitation Titration: Endpoint Detection Methods

In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...

You might also read

Related Articles

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

Sort by
Same author

Bottlebrush Side Chain Isomers: Spherical Self-Assembly Eliminates PEG Crystallinity at Room Temperature.

ACS macro letters·2026
Same author

Naphthalene-Derived Photo-Switchable Hyperbranched Polymer by Anionic Polymerization for the Early Stage Detection and Monitoring Azoreductase Activity under Hypoxic Environment.

Bioconjugate chemistry·2026
Same author

Naphthalene-Derived Polynorbornenes Nanoaggregates for the Selective and Sensitive Detection of Hydrogen Sulfide in Environmental and Biological Samples.

Biomacromolecules·2025
Same author

Unique Polyester-Based Biodegradable Multiarm Nano-Carrier for Cancer Cell Specific Mitochondrial Delivery of Chemotherapeutics.

Biomacromolecules·2025
Same author

Wet/Dry Bottlebrush Pressure Sensitive Adhesives via a Dangling Defect-Driven Design.

ACS applied materials & interfaces·2025
Same author

Antifouling Activity of Bottlebrush Network Hydrogels.

ACS applied bio materials·2025

Related Experiment Video

Updated: Jul 6, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
09:33

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

A highly selective colorimetric aqueous sensor for mercury.

Raja Shunmugam1, Gregory J Gabriel, Cartney E Smith

  • 1Department of Polymer Science and Engineering, University of Massachusetts Institution, Amherst, MA 01003, USA.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 19, 2008
PubMed
Summary
This summary is machine-generated.

A novel colorimetric sensor utilizing terpyridine derivatives offers rapid and selective detection of mercury (Hg II) ions. This sensor achieves detection limits as low as 2 parts per billion (ppb), meeting environmental standards for safe drinking water.

More Related Videos

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples
09:51

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples

Published on: September 19, 2025

Related Experiment Videos

Last Updated: Jul 6, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
09:33

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples
09:51

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples

Published on: September 19, 2025

Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Materials Science

Background:

  • Mercury (Hg II) poisoning poses a significant environmental and health risk.
  • Existing mercury detection methods often lack the required sensitivity or selectivity.
  • Development of rapid, cost-effective, and accurate mercury sensors is crucial for environmental monitoring.

Purpose of the Study:

  • To develop a new colorimetric sensor for the selective detection of mercury (Hg II) ions.
  • To investigate the sensor's performance in terms of selectivity, response time, and detection limits.
  • To provide a simple and effective tool for monitoring mercury contamination in water.

Main Methods:

  • Synthesis of terpyridine derivatives as mercury-binding ligands.
  • Colorimetric analysis of mercury (Hg II) ion solutions.
  • Spectroscopic measurements to determine low detection limits.
  • Testing selectivity against environmentally relevant ions (Ca II, Pb II, Zn II, Cd II, Ni II, Cu II).

Main Results:

  • The sensor exhibits instantaneous colorimetric response upon exposure to Hg II.
  • High selectivity for Hg II ions over other tested metal ions.
  • Visual detection limit of 2 ppm (25 microM) by naked eye.
  • Spectroscopic detection limit of 2 ppb (25 nM), aligning with EPA standards for drinking water.

Conclusions:

  • The developed terpyridine-based sensor provides a sensitive and selective method for Hg II detection.
  • The sensor's simplicity and rapid response make it suitable for field applications.
  • This technology offers a promising solution for monitoring mercury contamination in water sources.