Fig. 7.

Dependences on nitrite concentration for the two steps of the deoxy → met nitrite process discussed in Fig. 6. The rate constants are 0.08 M⁻¹s⁻¹ for k_l (A → B, black symbols in Fig.), and 0.04 M⁻¹s⁻¹ for k₂ (B → C, grey symbols); the reaction orders are 0.8 and 1, respectively. At nitrite concentrations below 400 mM, essentially no transformation of deoxy hemoglobin was observed under these conditions.