2021-07-23 14:14:00
Used in the composition of a wide variety of everyday products – foods, cosmetics, medicines, etc. – nanomaterials raise many questions about the risks that their presence can generate, both for human health and for the environment.
Today, the European Union defines nanomaterials as materials whose size or structure includes at least one of its three dimensions between approximately 1 and 100 nanometers. In fact, this definition may vary depending on the sector of activity. For example, the same material will not be considered nano in foodstuffs even though it will be identified as such in cosmetic products.
In anticipation of a possible revisionthe European Commission has launched a public consultation from May 6 to June 30, 2021 on the interest of revising the terms of the definition and considering variations or even harmonization in the different sectors of activity.
In his response to the consultationANSES considers that the modifications suggested by the Commission tend to restrict the number and nature of objects that will be considered in fine as nanomaterials. Thus, nanoplastics as well as certain nanoscale emulsions and lipids might not be considered to fall under this definition. However, such objects are increasingly developed for industrial purposes.
For Anses, the definition must be as comprehensive as possible and uniquely define nanomaterials based on physicochemical criteria. Sectoral regulations – cosmetics, biocides, foods, etc. – will then be able to specify, among these nanomaterials, those requiring special measures: product labeling, specific evaluation, authorization prior to placing on the market, etc.
Furthermore, the Agency regrets that the size thresholds (1-100 nm) used in the current definition are not open to discussion within the framework of this consultation because they do not have a scientific basis.
The Agency will publish by 2022, with the support of a group of multidisciplinary experts, an opinion which will enrich and put into perspective the response given to the European consultation.
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**Interview with Dr. Emily Hartman, Nanotechnology Safety Expert**
**Interviewer:** Thank you for joining us today, Dr. Hartman. To start off, can you explain what nanomaterials are and why they are significant in consumer products?
**Dr. Hartman:** Thank you for having me. Nanomaterials are materials that have at least one dimension on the nanometer scale, which is between 1 and 100 nanometers. They are increasingly used in a variety of everyday products like foods, cosmetics, and medicines due to their unique properties, which can enhance performance, durability, and effectiveness.
**Interviewer:** That sounds promising, but there are concerns about their safety. What are some of the main hazards associated with nanomaterials?
**Dr. Hartman:** Yes, there are significant safety considerations. One of the primary hazards is the potential for fire and explosion, as well as unexpected chemical reactions involving nanomaterials. Due to their small size, they can behave very differently compared to their larger counterparts. This can pose risks to both human health and the environment.
**Interviewer:** The European Union has a specific definition for nanomaterials. Can you elaborate on that?
**Dr. Hartman:** Certainly! The EU defines nanomaterials based on their size and structure, specifically if at least one dimension falls between 1 and 100 nanometers. It’s interesting to note that this definition can vary across sectors. For example, a material may be considered nano in a cosmetic product but not classified as such in food products, which complicates regulatory and safety assessments.
**Interviewer:** With such complexities, how should consumers approach products containing nanomaterials?
**Dr. Hartman:** Consumers should be informed and cautious. It’s essential to look for transparency from manufacturers regarding the presence and safety of nanomaterials in their products. Supporting regulations that ensure rigorous testing and labeling can help maintain safety standards. Advocacy for clear communication about risks is crucial as we navigate this evolving field.
**Interviewer:** Lastly, what steps can researchers and policymakers take to address the concerns surrounding nanomaterials?
**Dr. Hartman:** Researchers need to prioritize safety studies and develop standardized testing methods for nanomaterials across different industries. Policymakers should work towards creating comprehensive regulations that protect public health and the environment while still allowing innovation in nanotechnology. Collaboration between scientists, industry, and regulatory bodies is vital to ensure we harness the benefits of nanomaterials safely.
**Interviewer:** Thank you, Dr. Hartman, for shedding light on this important topic. Your insights are invaluable as we explore the intersection of technology, health, and safety.
**Dr. Hartman:** Thank you for having me! It’s an ongoing journey, and I appreciate the opportunity to discuss such pertinent issues.