Separate Determination of Borohydride, Borate, Hydroxide, and Carbonate in the Borohydride Fuel Cell by Acid-Base and Iodometric Potentiometric Titration

Figure 3

Dependence of the “measured/weighted” ratios for anions on their mole fraction 𝜔_𝑖 in the mixture: (a) for the OH⁻+BH₄⁻+BO₂⁻ system before correction of systematic errors; (b) for the OH⁻+BH₄⁻+BO₂⁻ system after correction of systematic errors; (c) for the OH⁻+CO₃²⁻ system before correction of systematic errors; (d) for the OH⁻+CO₃²⁻ system after correction of systematic errors; (e) for the OH⁻+BH₄⁻+BO₂⁻+CO₃²⁻ system before correction of systematic errors; (f) for the OH⁻+BH₄⁻+BO₂⁻+CO₃²⁻ system after correction of systematic errors. The solid lines show the average trend of errors. The dotted lines show the error interval for the method of simulation.

(a)

(b)

(c)

(d)

(e)

(f)