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Propionic Acid Analytical Conditions
Column: Spursil C18, 250 mm × 4.6 mm, 5 μm (Cat.# 82006)
Flow Rate: 1.0 mL/min
Injection Volume: 20 μL
Column Temperature: 25 °C
Detector: UV detector at 214 nm
Mobile Phase:
A: 1.5 g/L diammonium hydrogen phosphate solution, adjusted to pH 3.1 with 1.0 mol/L phosphoric acid
B: 50% aqueous methanol solution
Gradient Settings
Propionic Acid Spike Recovery Results
Spike recovery results of propionic acid in pastries, mooncakes, non-fermented soybean products, and vinegar.