Does Calibration with Pristine PET Allow the Identification and Quantification of Aged PET Microplastic Particles by DSC?

The microplastic (MP) pollution is recognised as one of the most challenging problems of the twenty-first century (Born and Brüll in The Science of the total environment 811, 2022). Due to inadequate waste management, plastic waste enters the natural environment, where it can remain for a long period of time.