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

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET

Atomic Absorption Spectroscopy: Lab

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...

Glassware Calibration

Glassware Calibration

Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...

Titrimetric Methods: Types and Commonly Used Strategies

Titrimetric Methods: Types and Commonly Used Strategies

In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...

You might also read

Related Articles

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

Sort by

Same author

Stakeholder engagement towards establishing a national thyroid cancer registry in South Africa.

South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie·2026

Same author

Thyroid cancer pathology: Insights from a developing region.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2025

Same author

Prevention and harm reduction of obesity (clinical prevention).

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2025

Same author

The role of mental health in obesity management.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2025

Same author

Metabolic and bariatric surgery: Selection and preoperative work-up.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2025

Same author

Metabolic and bariatric surgery: Surgical options and outcomes.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2025

Search research articles

Related Experiment Video

Updated: May 4, 2026

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Published on: January 6, 2016

Standardization of Tc-99 by three liquid scintillation counting methods.

W M van Wyngaardt¹, M J van Staden¹, J Lubbe¹

¹National Metrology Institute of South Africa, 15 Lower Hope Road, Rosebank, 7700 Cape Town, South Africa.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|December 17, 2013

Summary

The National Metrology Institute of South Africa validated Technetium-99 (Tc-99) radioactivity measurements using three methods. Results confirmed the accuracy of the latest (2011) decay data evaluation for Tc-99.

Keywords:

4π(LS)β–γ coincidence tracing Beta spectral shape CNET Liquid scintillation counting TDCR Technetium-99

More Related Videos

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

Optimization of Radiochemical Reactions using Droplet Arrays

Optimization of Radiochemical Reactions using Droplet Arrays

Published on: February 12, 2021

Related Experiment Videos

Last Updated: May 4, 2026

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Radiolabeling and Quantification of Cellular Levels of Phosphoinositides by High Performance Liquid Chromatography-coupled Flow Scintillation

Published on: January 6, 2016

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

Optimization of Radiochemical Reactions using Droplet Arrays

Optimization of Radiochemical Reactions using Droplet Arrays

Published on: February 12, 2021

Area of Science:

Metrology
Nuclear Science
Radiochemistry

Background:

International key comparisons are crucial for harmonizing radioactivity measurements globally.
Accurate standardization of pure beta emitters like Technetium-99 (Tc-99) is essential for various applications.

Purpose of the Study:

To participate in the international key comparison CCRI(II)-K2.Tc-99 for Tc-99.
To validate the standardization of Tc-99 solutions using multiple independent methods.

Main Methods:

Utilized three distinct methods for radioactivity standardization: TDCR efficiency calculation, CIEMAT/NIST efficiency tracing, and 4π(LS)β-γ coincidence tracing.
Employed Cobalt-60 (Co-60) as a tracer in the coincidence method.
Compared results against the latest (2011) Decay Data Evaluation Project (DDEP) evaluation of Tc-99 decay data.

Main Results:

Achieved excellent agreement between the results obtained from the three independent standardization methods.
Demonstrated consistency in radioactivity measurements for Tc-99.

Conclusions:

The study confirms the reliability of the three applied methods for Tc-99 standardization.
Validated the applicability of the 2011 DDEP evaluation for Tc-99 beta spectral shape, superseding the 2004 evaluation.