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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Environ Sci Nano. 2017 Aug 30;4(11):2144–2156. doi: 10.1039/C7EN00573C

Figure 1.

Figure 1

1H NMR spectra (δH 0 – 10.5 ppm) of toner powder, PM2.5 and PM0.1 printer-emitted particles acquired with solvent suppression and exclusion regions for residual HDO. Functional structure are indicated from right to the left: (a) aliphatic carbon (HCCC); (b) “allylic-analogue” (HC-C=X); (c) oxygenated and methoxy (HC-O); (d) olefinic (R-CH=CH-R and O-CH-O); and (e) aromatic (HCar), The respective spectral intensities were scaled to 100% total integral within the entire region of chemical shift (δH 0.7–10.5 ppm; with residual water excluded). Fo: Formate, Bo: Benzoate, La: Lactate, Su: Succinate, Acetate:, TPA: Terephthalate.