高效液相色谱法测定烟用接装纸中的六价铬

Determination of Chromium (Ⅵ) in Cigarette Tipping Paper by High Performance Liquid Chromatography

  • 摘要: 建立了一种测定烟用接装纸中六价铬的高效液相色谱法.方法以磷酸盐缓冲液萃取试样中的六价铬,加入二苯卡巴肼与六价铬进行显色配合反应,生成紫红色配合物,过滤后滤液经液相色谱柱分离,二极管阵列检测器分析测定.方法检出限为0.020 mg/kg,定量限为0.067 mg/kg,回收率为84.0%~99.8%,方法准确度和精密度均满足烟用接装纸的检测要求.

     

    Abstract: A method for the determination of chromium Ⅵ in the cigarette tipping paper by high performance liquid chromatography (HPLC) was developed. Cr (Ⅵ) was extracted using a phosphate buffer. After filteration, chromium Ⅵ reacted with diphenylcarbazide to form a purple complex, and the chromium Ⅵ content was detected with a diode array detector. The limit of detection (LOD) of Cr(Ⅵ) was 0.020 mg/kg, the quantitation limit was 0.067 mg/kg. The recovery was ranged from 84.0% to 99.8%. Results indicated that the accurancy and prcision met the requirements of the detemination of Cr(Ⅵ) content in cigarette tipping paper.

     

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