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![A critical comparison of the main characterization techniques for microplastics identification in an accelerated aging laboratory experiment](https://image.oaes.cc/3c1d9abb-f5fc-492d-b258-0af6c7dd051c/wecn2069.fig.1.jpg)
Figure 1. FTIR-ATR spectra of PE and PP polymer samples. PE and PP correspond to virgin samples and PE-d and PP-d correspond to degraded samples after accelerated aging in the QUV. FTIR: Fourier-transform Infrared spectroscopy; ATR: attenuated total reflectance; PE: polyethylene; PP: polypropylene.