Gas chromatograms
of the gaseous phase of samples after 40 min
of incubation. Samples contained (a) 100 μM DETAPAC, 100 μM
neocuproine, 10 mM ascorbate, and 2 mM H2O2 in
1:3 DMSO/phosphate buffer (20 mM, pH 7.4) (v/v); (b) the same composition
as in panel (a) but with 10 μM PHQ ; and (c) 10 μM FeCl2, 10 mM ascorbate, and 2 mM H2O2 in
1:3 DMSO/phosphate buffer (20 mM, pH 7.4) (v/v).