Spectrophotometric Analysis of Phosphoric Acid Leakage in High-Temperature Phosphoric Acid-Doped Polybenzimidazole Membrane Fuel Cell Application

<div>Relationship between PA concentration and the absorbance of standard solutions reacted with (a) molybdenum blue, (b) rhodamine B, and (c) crystal violet color reagent.</div>

Journal of Sensors

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Figure 4

Figure 4: Spectrophotometric Analysis of Phosphoric Acid Leakage in High-Temperature Phosphoric Acid-Doped Polybenzimidazole Membrane Fuel Cell Application 

Figure 4 | Spectrophotometric Analysis of Phosphoric Acid Leakage in High-Temperature Phosphoric Acid-Doped Polybenzimidazole Membrane Fuel Cell Application 