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Figure 8
Predicted depth-averaged, unreacted sample fraction MR versus the Lagrangian sample residence time t for varied reaction half-lives t1/2 and fixed sample Qsa and sheath Qsh flow rates. The reaction studied involved ascorbic acid H2Asc and ferricyanide [{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}] reactants and de­hydro­ascorbic acid Asc and ferrocyanide [{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{4-}] products. The shaded area near the lines shows the range of possible MR given variations in sample and sheath species diffusivities of 10%. The second-order decay rate for these simulations was estimated as k = [\ln\left(2\right)/{t_{1/2}}{\left[{{{\rm{H}}_2}{\rm{Asc}}}\right]_0}]. Data are for initial concentrations of [{\left[{{\rm{Fe}}\left({{\rm{CN}}}\right)_6^{3-}}\right]_0}] = 40 mM and [H2Asc]0 = 200 mM.

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ISSN: 1600-5775
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