食品科学 ›› 2007, Vol. 28 ›› Issue (1): 270-273.

• 分析检测 • 上一篇    下一篇

反相离子对液相色谱法测定小麦粉中的溴酸钾

 王骏, 张卉, 祝建华   

  1. 山东省产品质量监督检验研究院; 山东省产品质量监督检验研究院 山东济南250100; 山东济南250100;
  • 出版日期:2007-01-15 发布日期:2011-12-31

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

摘要: 建立了反相离子对液相色谱法分离和测定小麦粉中的溴酸钾的方法。使用SymmetryshieldTMRP18色谱柱,以甲醇:4mmol/L柠檬酸+2mmol/L十六烷基三甲基溴化铵水溶液=48:52(V/V)为流动相,在220nm波长下检测。线性范围为:3.0~96.0mg/L,方法检出限为1.0mg/kg,方法回收率在89.7%~103.6%。

关键词: 溴酸钾, 小麦粉, 反相离子对液相色谱

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