Organic acids in pineapple juice with addition of oxalic acid

• Column:
  Rezex ROA-Organic Acid 300х7.8 mm 8 µm
• Column Guard:
  SecurityGuard Carbo-H+ 4х3.0 mm
• Separation mode:
  Isocratic
• Mobile phase:
  0.006 N sulfuric acid solution
• Flow rate:
  0.4 ml / min
• Column temperature:
  20 °С
• Sample volume:
  20 µl
• Detector:
  Spectrophotometric detector
• Detection parameters:
  wavelength 210 nm
• Object of study:
  Juices, nectars
• Substance groups:
  Organic acids
• Sample:
  pineapple juice with added oxalic acid
• Methodology:
  Methods for measuring the mass concentration of organic acids in beverages by high performance liquid chromatography