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Diduco AB 2016-2019

Diduco AB

Tvistevägen 48C

90736 Umeå

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Organic acids separations

At generic non-optimized separation conditions

Example separations with different column brands using Xenoic® XAMS suppressor and ASUREX automatic regenerator to enhance sensitivity and reduce background and noise.

Organic acids separation on a Shodex SI 50-4E column (250x4 mm) using an eluent containing 5 mM Na₂CO₃ and 5 mM NaHCO₃ in water pumped at 0.8 mL/min at 24 °C. Background reduced by XAMS suppressor with ASUREX-A100 automatic regenerator. Eluent pumping and conductivity detection by Shimadzu LC-10ADVP and CDD-10AVP, respectively. Injection of 20 µL of glycolic, propionic, pyrivic, malic, malonic, maleic, oxalic and fumaric acids (20-40 mg/L) in water.

Organic acids separation on a IonPac AS4A-SC column (250x4 mm) using an eluent containing 5 mM Na₂CO₃ and 5 mM NaHCO₃ in water pumped at 0.8 mL/min at 24 °C. Background reduced by XAMS suppressor with ASUREX-A100 automatic regenerator. Eluent pumping and conductivity detection by Shimadzu LC-10ADVP and CDD-10AVP, respectively. Injection of 20 µL of lactic, pyruvic, malonic, maleic, oxalic and fumaric acids (20-40 mg/L) in water.