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

UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

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...

Redox Titration: Overview

Redox Titration: Overview

Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...

Effects of EDTA on End-Point Detection Methods

Effects of EDTA on End-Point Detection Methods

Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...

You might also read

Related Articles

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

Sort by

Same author

Novel H<sub>2</sub> colourimetric indicator for screening the activity of H<sub>2</sub>-generating bacteria and measuring their total viable count (TVC).

The Analyst·2026

Same author

Ammonia colourimetric indicator for measuring urease and ureolytic bacteria concentrations.

Biosensors & bioelectronics·2025

Same author

Early wound infection monitoring via headspace O<sub>2</sub> micro-respirometry.

Biosensors & bioelectronics·2024

Same author

An Interprofessional Team for Disease-Modifying Therapy in Alzheimer Disease Implementation.

Neurology. Clinical practice·2024

Same author

Bracing Adolescent Idiopathic Scoliosis (BASIS) study - night-time versus full-time bracing in adolescent idiopathic scoliosis: study protocol for a multicentre, randomized controlled trial.

Bone & joint open·2023

Same author

Photoinduced absorption spectroscopy (PIAS) study of water and chloride oxidation by a WO<sub>3</sub> photoanode in acidic solution.

Physical chemistry chemical physics : PCCP·2023

Search research articles

Related Experiment Video

Updated: Jun 23, 2026

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Published on: May 27, 2016

UV dosimeter based on dichloroindophenol and tin(IV) oxide.

Andrew Mills¹, Pauline Grosshans

¹University of Strathclyde, Department of Pure and Applied Chemistry, Thomas Graham Building, 295 Cathedral Street, Glasgow, UKG1 1XL. a.mills@strath.ac.uk

|April 22, 2009

Summary

A novel UVB dosimeter uses a redox dye, semiconductor, and electron donor in a polymer film. This indicator changes color with UVB exposure, potentially warning of sunburn risk.

More Related Videos

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

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

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: Jun 23, 2026

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model

Published on: May 27, 2016

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

Published on: February 20, 2021

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

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:

Photochemistry
Materials Science
Dermatology

Background:

UVB radiation poses risks, necessitating accurate exposure measurement.
Current methods for monitoring UVB exposure can be complex or inaccessible.
Developing simple, visual indicators for UVB exposure is desirable.

Purpose of the Study:

To develop and characterize a novel dosimeter specifically for ultraviolet B (UVB) radiation.
To investigate the response of the dosimeter to varying UVB levels and environmental factors.
To assess the dosimeter's potential for measuring solar exposure and predicting erythema risk.

Main Methods:

A polymer film containing 2,6-dichloroindophenol (DCIP) redox dye, tin(IV) oxide semiconductor, and glycerol electron donor was fabricated.
The spectral characteristics and color change mechanism upon UVB exposure were analyzed.
The dosimeter's response was correlated with UVB irradiance, exposure duration, and component concentrations.

Main Results:

The dosimeter film, initially blue, rapidly decolorizes upon UVB exposure.
Response is dependent on UVB irradiance, duration, and tin(IV) oxide concentration.
Dosimeter response is independent of dye concentration and film thickness.
The color loss correlates with the Minimal Erythemal Dose (MED) for skin type II under simulated solar light.

Conclusions:

A simple, visual UVB dosimeter based on DCIP and SnO(2) has been developed.
The dosimeter provides a quantifiable response to UVB exposure, related to erythema risk.
This technology holds potential for personal solar radiation monitoring and sunburn prevention.