LC

Samples

Citric acid , Tartaric acid , Malic acid , Malonic acid , Succinic acid , Glycolic acid , Formic acid , Lactic acid , Acetic acid , Fumaric acid , Adipic acid , Pyroglutamic acid , Propionic acid , Acrylic acid , Pivalic acid , Methacrylic acid , Crotonic acid

Applications

Elution position of the aliphatic organic acid

Column

ULTRON PS-80H

Column Size

300 mm L × 8.0 mm I.D. + 300 mm L × 8.0 mm I.D.

Mobile phase

HClO4aq. (pH 2.1)

Frow rate

1.0 mL/min

Column temp.

60°C

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LC

Samples

Maleic acid , Ascorbic acid , Citric acid , Fumaric acid

Applications

Organic acid and vitamin C in the juice (other the maleic acid)

Column

ULTRON VX-ODS

Column Size

150 mm L × 4.6 mm I.D.

Mobile phase

20 mM Phosphoric acid buffer(pH 2.4)

Frow rate

0.8 mL/min

Column temp.

ambient

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LC

Samples

Maleic acid , Pyruvic acid , Ascorbic acid , Gluconic acid , Adipic acid , Fumaric acid , Tartaric acid , Malic acid , Citric acid

Applications

Analysis of organic acid

Column

ULTRON AF-HILIC-CD (PLSS)

Column Size

150 mm L × 2.0 mm I.D.

Mobile phase

100mM CH3CO2NH4 (pH6.8) /CH3CN = 25/75

Frow rate

0.20 mL/min

Column temp.

40°C

Injection volume

2.0 µL

Diluent

Mobile phase

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