FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (1): 270-273.

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Method of Potassium Bromate Determination in Wheat Flour by Ion-pair RP-HPLC

 WANG  Jun, ZHANG  Hui, ZHU  Jian-Hua   

  1. Shandong Provincial Institute of Product Quality Supervision and Inspections, Jinan 250100, China
  • Online:2007-01-15 Published:2011-12-31

Abstract: A method of potassium determination bromate in wheat flour is described. The separation and determination were based on a Symmetry shieldTM RP18 column with UV detecter at 220 nm and methanol: liquid(48:52)of 0.004mol/L citric acid at 0.002mol/L hexadecyl- -trimethylammonium bromide as mobile phase. The calibration curve is linear in the range of 3.0~ 96.0mg/L and the detection limit is 0.1 mg/kg, while the recovery is 89.7%~103.6%.

Key words: potassium bromate, wheat flour, ion-pair RP-HPLC