Chromatograms of the chemicals emitted by the polymer sheets during a 1 d sampling period at 50 °C. (a) polyethylene-1 (PE-1), (b) PE-2, (c) PE-3, (d) ethylene-vinyl acetate (EVA), (e) polypropylene (PP), (f) poly(methyl methacrylate) (PMMA), (g) polyethylene terephthalate (PET), (h) polyacetal (POM), (i) polycarbonate (PC), (j) poly(vinyl chloride)-1 (PVC-1), (k) PVC-2, (l) PVC-3, and (m) PVC-4. DEHP = bis(2-ethylhexyl)phthalate, DEP = diethylphosphate, TPP = triphenylphosphine.