Fig. 8

Plots of kψ versus [SDS] in the absence and presence of Fe3O4. Reaction conditions: [procaine] = 5.0 × 10−5 mol dm−3, [NaOH] = 5.0 × 10−2 mol dm−3 and temperature = 37 °C

Plots of kψ versus [SDS] in the absence and presence of Fe3O4. Reaction conditions: [procaine] = 5.0 × 10−5 mol dm−3, [NaOH] = 5.0 × 10−2 mol dm−3 and temperature = 37 °C