Related Experiment Video
Updated: Jan 3, 2026

08:08
Author Spotlight: Investigating the Tolerance of Cabbage Butterflies to Urban Pollutants
Published on: August 18, 2023
5.0K
It's Time to Replace the Term "Heavy Metals" with "Potentially Toxic Elements" When Reporting Environmental Research
Olivier Pourret1, Andrew Hursthouse2
1UniLaSalle, AGHYLE, 19 rue Pierre Waguet, 60000 Beauvais, France.
International Journal of Environmental Research and Public Health
|November 27, 2019
Summary
The term "heavy metal" is imprecise and outdated. This study advocates for the adoption of "Potentially Toxic Element(s)" (PTEs) for clearer scientific communication regarding pollution and environmental impacts.
Area of Science:
- Environmental Science
- Chemistry
- Toxicology
Background:
- The term "heavy metal" has been widely used for decades across natural and environmental sciences.
- Its usage persists despite lacking a precise scientific definition, leading to ambiguity.
- The term is particularly prevalent in studies concerning pollution impacts and environmental contamination.
Discussion:
- This paper argues for the explicit endorsement and adoption of the term "Potentially Toxic Element(s)" (PTEs).
- PTEs offers a more scientifically accurate and descriptive classification for elements with toxicological relevance.
- The study identifies specific chemical elements that should be considered under the PTEs classification.
Key Insights:
- "Heavy metal" is an imprecise and controversial term in scientific literature.
- "Potentially Toxic Element(s)" (PTEs) is a more accurate and recommended term.
- Clearer terminology is crucial for effective communication in environmental pollution studies.
Outlook:
- Wider adoption of the term PTEs will enhance clarity in scientific research and environmental policy.
- Further research should focus on refining the criteria for classifying elements as PTEs.
- Standardizing terminology will improve the consistency and impact of studies on toxic elements.
Related Concept Videos
The Periodic Table and Organismal Elements
22.1K
Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally occurring, and only a few of them are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.
Periodic Table Provides Information...
Periodic Table Provides Information...
22.1K
The Periodic Table and Organismal Elements
199.1K
Overview
199.1K
Types of Toxins
3.1K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
3.1K
Toxic Reactions: Overview
1.7K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
1.7K
Voltammetry: Stripping Methods
743
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
743
Extraction: Advanced Methods
1.0K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.0K

