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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Free Radic Biol Med. 2016 Sep 25;101:20–31. doi: 10.1016/j.freeradbiomed.2016.09.020

Figure 6.

Figure 6

Analysis of the reaction of RSS· with O2. (a) Rate of dioxygen consumption detected by a Clark-type electrode. Solid line: Dioxygen consumption under ambient conditions (0–10 min), in the presence of 100 μM TEMPOL (10–20 min) and in the presence of 100 μM TEMPOL and 10 μM MCPD (20–40 min) in 100 mM phosphate buffer (pH 7.4) containing 50 μM DTPA. Dashed line: Positive control for the detection of dioxygen in an N2 purged flask (0–10 min), after the addition of 1 mL pure O2 gas (10–15 min) and after a second addition of 1 mL pure O2 gas (15–40 min). (b) Computational evaluation of the reaction of a perthiyl radical (CH3-SS· as a model compound) with O2.