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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: Chem Res Toxicol. 2009 Jun;22(6):1137–1150. doi: 10.1021/tx900071f

Figure 9.

Figure 9

Oxidation of salbutamol and fenoterol by a LPO/H2O2 system. A. Time course of absorption changes at 412 nm (ferric LPO, trace a) and 430 nm (LPO compound II, trace b) following addition of H2O2 (5 μM) to LPO (0.7 μM) in 0.1 M phosphate buffer (pH 7.0) in the absence of β2-agonists. B. The same as in A but in the presence of salbutamol (100 μM). Trace c shows changes in absorbance at 315 nm due to accumulation of salbutamol oxidation products following addition of H2O2 (indicated by arrows). C. The same as in A but in the presence of fenoterol (100 μM). Data points were collected in 15 s intervals.