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. Author manuscript; available in PMC: 2017 Nov 28.
Published in final edited form as: Analyst. 2016 Nov 28;141(24):6521–6532. doi: 10.1039/c6an01448h

Figure 2.

Figure 2

ATR-FTIR analysis of UV/O3-activated TOPAS COC and PE. a) ATR-FTIR spectrum of PE and COC exposed to 21.85 mW/cm2 of UV/O3 for 15 min. b) Sub-section of the spectrum seen in (a) showing the carbonyl region of the spectrum. c–f) Oxygen to carbon ratio versus exposure time for various power levels of UV/O3 activation for PE, COC 8007, COC 6013 and COC 6017, respectively. The lines connecting the data points do not represent a functional relationship within a series, but are used for clarity of presentation only.