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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Chem Eng J. 2021 Oct 1;421(1):10.1016/j.cej.2021.129816. doi: 10.1016/j.cej.2021.129816

Fig. 7.

Fig. 7.

ToF-SIMS images of total ions shown in greyscale and ion m/z 113 shown in red from the polyethylene (PE) pellets (a) when PE pellets were exposed for 14 days to sea surf simulation; (b) exposed for 1 month to sea surf simulation [118] (reproduced with permission from Elsevier); (c) ToF-SIMS spectra of the oxidized surface of SW pellet [119]. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)