Rapid Generation of Microplastics and Plastic-Derived Dissolved Organic Matter from Food Packaging Films under Simulated Aging Conditions

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The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.est.4c05504.

• Text S1, conditional fragmentation modeling of the size distribution of MPs; Text S2, MP generation kinetics modeling; Text S3, literature search methodology; Text S4, 2D-COS analysis; Text S5, meanings of key parameters from GPC analysis; Text S6, detailed information on FT-ICR-MS data interpretation; Text S7, quality control measures and statistical analyses; Tables S1 and S2, conditional fragmentation modeling parameters and exponential modeling parameters for different aging treatments; Table S3, calculated fragmentation dimension values; Table S4, MP counting results in procedural blank samples; Table S5, analyte characteristics of shared 40 DOM substances for all groups; Tables S6–S13, analyte characteristics of the most abundant DOM substances following different aging processes; Table S14, summary of the DOM characteristics determined by FT-ICR-MS; Figure S1, conditional fragmentation modeling of the size distribution of MP generated following different aging processes; Figure S2, flow diagram reporting the number of retrieved studies; Figure S3, effect of air-drying on MP quantification; Figure S4, MP generation from large pieces of food wrap as compared with cut pieces; Figure S5, MP generation from food wrap in contact with different liquids; Figure S6, exponential fitting of MP generation characteristics; Figure S7, morphologies of the aged food wrap and the generated MP; Figure S8, FTIR spectra of the remaining plastic film following different aging treatments; Figure S9, 2D-COS maps showing the changes in surface functionality of the remaining plastic film; Figure S10, Raman spectra of the remaining plastic film following different aging treatments; Figure S11, XPS survey spectra of the remaining plastic film following different aging treatments; Figure S12, XPS C 1s spectra of the pristine and aged plastic film following microwave irradiation, heating, and steaming; Figure S13, XPS C 1s spectra of the aged plastic film following UV irradiation, refrigeration, freezing, and freeze–thaw cycling; Figure S14, correlation of DOC content with the number of FT-ICR-MS identified analytes; and Figure S15, Venn diagram showing the number of shared and unique analytes determined by FT-ICR-MS (PDF)