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. 2022 Feb 18;301:119019. doi: 10.1016/j.envpol.2022.119019

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Fig. 4 — EPR spectra obtained from leachates samples (Mask 1) (A) with DMPO/DMSO (100 mM, 500 μL), and (B) with DMPO (100 mM, 500 μL). Black lines represent 5 d-samples, red lines represent 10 d-samples and blue lines represent 15 d-samples. No EPR single was found in the samples which were without soaking (0 d-soaking) and the results were not shown in the figure. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)