CENAGG

The questions of agglomeration and aggregation of nano-objects are key to many issues (nanomaterial performance, risk assessment, regulatory requirements) and at the heart of many discussions on the very definition of a "nanomaterial". nanomaterial in the regulatory field.

Differentiate between Agglomeration a Aggregate However, from an analytical point of view, they remain highly complex, the only difference being the more or less strong binding energy between the primary particles that make them up. This project to develop a European Technical Specification (CEN/TS), piloted by the NPL (GB), started at the end of 2021 for a duration of 4 years within the Technical Committee 352 Nanotechnologies du CEN (European standardization). The aim is to produce a document giving recommendations on the analytical strategies to be implemented to differentiate agglomerates and aggregates in the case of different matrices (powders, colloidal suspensions, aerosols), while providing the advantages and limitations of the techniques currently available on the market.