PlasticsFatE Deliverable Report D1.1 Report on selected MP/NP and basic Physico Chem features

The deliverable D1.1 addressed some of the specific objectives of Task 1.1, as summarised below: 1. To select a set of relevant MP/NP to maximise the impact ofPlasticsfatecovering as much aspossible the compositional/morphological classes of micro-nano plastics (MP/NP) commonly spreadinto food, drinking and environmental matrices. 2. To generate and store a bank of relevant reference and/or certified, well-characterisedmicro-nano plastics (MP/NP) covering the identified classes for use inPlasticsfateand for future projectsthatwillcharacteriseor develop strategies to mitigate MP/NP pollution. 3. To develop standardized protocol for how to handle,characterize, store and distribute MP/NP. 4. To facilitate particles labelling, traceability and detection by means of fluorescent markers. In response to specific objective 1, it was established at portfolio (1st Tier) ofPlasticsfateMP/NPmaterials, differing for polymer type, source/size, use scenarios, it was agreed the code for theirclassificationand they were distributed to partners for the characterisation. In response to specific objective 2, BAMwas in charge ofthe creation ofPlasticsfatesamplesrepository, including some primary plastics, some commercial samples and some secondary particles,obtained by BAM throughcryomilling/aging treatments. The samples were checked by BAM andISTEC through dynamic imaging and optical or electronic microscope characterisation. The endotoxincontamination was tested by GAIKER (a partner from WP3), confirming that secondary PE, PETparticles and HDPE commercial sample (CeridustfromCariant) were not affected by endotoxincontamination. In response to specific objective 3, BAM developed and tested protocols for plastics milling andweathering; ISTEC-CNR and UNITO carried out an intensedispersabilitystudyin order toidentifydispersion protocols suitable for characterisation in WP1-3. A two-step process was selected, ageneral protocol for the preparation of stock dispersions and specific dispersants for the dilution ofstock dispersions in relevant simulant fluids (work dispersions). In response to specific objective 4, CSICcharacterisedLa-Eu doped PS nanoparticles purchased anddistributed by STAMI. Traceability was investigated by Raman-luminescence mapping. The results from D1.1. were shared/disseminated through the participation atCUSPchannels/events/workshops, where Task 1.1 partners are involved: Anna Costa/MagdaBlosirepresentatives forPlasticsfatein WG1 (Analytical methods and representative materials) andKorinnaAltmann/DanHodoraba, as coordinator of WG3 (Inter-laboratory comparisons).