All of the supporting tables and figures were listed in the S1 File.

It includes information on the sample IDs, sample descriptions, sampling dates and sample numbers in the field experiment (Table A); Concentrations of PCBs in grapes from national markets and e-waste dismantling area (Table B); Correlations among PCB homologues in copper sulfates of field experiment (C1~C2) samples and agricultural grade (C3~C10) samples (Table C); The concentrations of Σ19PCBs in air and soil samples from different functional zones and sampling time (Table D); The homologue distribution of PCBs in CuSO4 of field experiment (C1~C2), agricultural grade CuSO4 (C3~C10) and analytical grade CuSO4 (C11~C14) (Fig A); Loading plot of Principle component analysis (PCA) of PCBs in national grape samples (Fig B); Congener profiles of PCBs in (a) air, (b) soil samples and (c) national air survey (Fig C). (DOCX)