Lessons from nanosafety research for effective regulation and safer handling of nanomaterials at the workplace

At the turn of the twentieth century, nanotechnology was regarded as the new innovation potential. However, increased industrial use of nanomaterials raised concerns whether nanomaterial exposure could pose occupational health risks similar to asbestos. In 2012, the National Research Centre for the Working Environment (NFA) established the ‘Danish Centre for Nanosafety’ with the aim to provide evidence-based knowledge for policy advice on occupational handling of nanomaterials. Relevant stakeholders including the Danish Working Environment Authority (WEA), the Danish Environment Protection Agency, and the social partners were engaged. The project achieved societal impact in various ways: NFA produced documentation for health-based occupational exposure limits for three engineered nanomaterials and diesel exhaust nanoparticles at the request of WEA. Denmark adopted a national occupational exposure limit for diesel particles in 2021. WEA made a guidance document on safe handling of nanomaterials. The Working Environment Council published fact sheets based on knowledge from NFA aimed at both nanomaterial providers and enterprises using nanomaterials. A revised law made it compulsory to register the presence of nanomaterials in products in the Danish Product Registry. Finally, the Danish Centre for Nanosafety supported development of a free, web-based control-banding tool for occupational risk assessment and -management of nanomaterials (NanoSafer.org).