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

Mass Spectrometry: Isotope Effect01:13

Mass Spectrometry: Isotope Effect

3.5K
Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
3.5K
Isotopes01:12

Isotopes

62.1K
Elements have a set number of protons that determines their atomic number (Z). For example, all atoms with eight protons are oxygen; however, the number of neutrons can vary for atoms of the same element. The sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are called isotopes. Elements can have multiple isotopes, for example, carbon-12, carbon-13, and carbon-14.
An element's atomic mass, or weight,...
62.1K
Isotopes and Radioisotopes01:28

Isotopes and Radioisotopes

10.6K
In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
10.6K
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

847
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...
847

You might also read

Related Articles

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

Sort by
Same author

Impact of meteorological conditions on fatty acid composition and isotopic signatures in Slovenian extra virgin olive oil: A long-term study.

Food chemistry·2026
Same author

Stable isotope and multi-element analysis coupled with DD-SIMCA for verification of Slovenian pork origin and Krškopolje pig authenticity.

Meat science·2026
Same author

Characterisation and authenticity assessment of rosemary and laurel essential oils using compound specific isotope analysis.

Food chemistry·2026
Same author

Isotopic Values of Prenatal Development: δ<sup>13</sup>C and δ<sup>15</sup>N Variation in Early-Formed Human Tissues.

American journal of biological anthropology·2026
Same author

Fatty Acid Composition and Aromatic Profile of Krškopolje and Modern Pig Breeds Reared Under Organic and Conventional Systems.

Foods (Basel, Switzerland)·2026
Same author

Large language models in food and nutrition science: Opportunities, challenges, and the case of FoodyLLM.

Current research in food science·2026

Related Experiment Video

Updated: Nov 23, 2025

Author Spotlight: Technologies and Challenges in Elemental Analysis of Food Samples
06:53

Author Spotlight: Technologies and Challenges in Elemental Analysis of Food Samples

Published on: December 22, 2023

3.1K

Special Issue "Isotopic Techniques for Food Science".

Nives Ogrinc1,2, Federica Camin3,4

  • 1Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.

Molecules (Basel, Switzerland)
|January 5, 2021
PubMed
Summary

Analytical verification ensures food safety, quality, authenticity, and traceability. Advanced methods are crucial for reliable food analysis and consumer protection.

More Related Videos

Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers
11:14

Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers

Published on: April 17, 2018

8.3K
Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
12:47

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources

Published on: January 22, 2018

9.7K

Related Experiment Videos

Last Updated: Nov 23, 2025

Author Spotlight: Technologies and Challenges in Elemental Analysis of Food Samples
06:53

Author Spotlight: Technologies and Challenges in Elemental Analysis of Food Samples

Published on: December 22, 2023

3.1K
Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers
11:14

Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers

Published on: April 17, 2018

8.3K
Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
12:47

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources

Published on: January 22, 2018

9.7K

Area of Science:

  • Food Science
  • Analytical Chemistry
  • Food Safety

Background:

  • The critical role of analytical verification in modern food analysis.
  • Importance of ensuring food safety, quality, authenticity, and traceability.

Discussion:

  • Challenges in current food analysis methodologies.
  • Need for robust and reliable analytical techniques.
  • Impact of verification on consumer trust and regulatory compliance.

Key Insights:

  • Analytical verification is fundamental to the food industry.
  • Ensuring safety, quality, and authenticity protects consumers.
  • Traceability systems enhance supply chain transparency.

Outlook:

  • Future trends in food analysis techniques.
  • Advancements in methods for detecting contaminants and adulterants.
  • Integration of novel technologies for comprehensive food assessment.