Development of Micro- and Nanoplastics Reference Materials under metrological criteria
The aim of this work package is to develop Micro- and Nanoplastics (SMPs/NPs) Reference Materials (RMs) that mimic real MP particles, with relevant polymer type, shapes, sizes and degradation status, as found in food and in the environment. A cut off value of 10 µm has been chosen to better differentiate between larger and smaller plastic particles, which is used throughout all WPs.
This value was chosen in respect to the different top-down approaches for the preparation of larger (> 10 μm) and smaller plastic particles (< 10 μm). It also matches the size resolution limit of traditional and established spectroscopy techniques, such as µFTIR, to provide a further classification of the most suitable techniques for particle characterisation in the micron and sub-micron/nano range.
Furthermore, this differentiation in size classes appears to be important at the (eco)toxicological level.
The homogeneity and stability control (at least 3-month) of all prepared MPs RMs will be tested according to ISO GUIDE 35:2017(E) and determined through a combination of particle size distribution and mass values or particle numbers. An overview of the RMs collection is provided in following table.
Measured Properties within WP1
PP, PET, PET fibres, tyre abrasion
10 – 100 µm
Aged PE, aged PP, aged PS
< 10 µm
Meet the other Work Packages
Development of routine Analytical Methods for Microplastics in food and environmental samples
The aim of this work package is the development and harmonisation of procedures (including sample preparation) for the characterisation of small Microplastics (100 – 10 µm) (particle number, polymer type, particle mass fraction and surface morphology) in complex food and environmental matrices.
Development and Validation of innovative characterisation methods for Small Micro- and Nanoplastics
The aim of this work package is to develop sample preparation strategies and measurement methods for small Microplastics (< 10 µm) and Nanoplastics (< 0.1 µm) in food related samples (drinking water and milk).