色谱 ›› 2017, Vol. 35 ›› Issue (8): 843-847.DOI: 10.3724/SP.J.1123.2017.03045

• 研究论文 • 上一篇    下一篇

双水杨醛邻苯二胺柱前衍生-高效液相色谱法测定茶叶中的Pb2+

卢玉曦, 栾锋, 刘惠涛   

  1. 烟台大学化学化工学院, 山东 烟台 264005
  • 收稿日期:2017-03-30 出版日期:2017-08-08 发布日期:2013-11-25
  • 通讯作者: 栾锋,Tel:6902063,E-mail:fluan@sina.com
  • 基金资助:

    国家自然科学基金项目(21675138).

Determination of Pb2+ in tea by bis(salicylaldehyde)-o-phenylenediamine pre-column derivatization-high performance liquid chromatography

LU Yuxi, LUAN Feng, LIU Huitao   

  1. College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
  • Received:2017-03-30 Online:2017-08-08 Published:2013-11-25
  • Supported by:

    National Natural Science Foundation of China (No. 21675138).

摘要:

建立了利用双水杨醛邻苯二胺希夫碱(SALOPHEN)作为衍生剂结合高效液相色谱(HPLC)测定茶叶中Pb2+含量的方法。Hypersil ODS2 C18反相色谱柱(250 mm×4.6 mm,5 μ m)为固定相,甲醇-水(80:20,v/v)为流动相,检测波长为226 nm,反应体系pH为10.0。结果表明,样品中Pb2+的线性范围为0.1~30 mg/L,线性相关系数为0.9988,检出限为0.01 mg/L,加标回收率为91.87%~96.96%。该方法具有较高的灵敏度和稳定性,适用于茶叶中Pb2+的检测。

关键词: 茶叶, 高效液相色谱, 双水杨醛邻苯二胺希夫碱, 重金属离子

Abstract:

The contents of Pb2+ in tea was determined by the high performance liquid chromatography (HPLC) method using bis(salicylaldehyde)-o-phenylenediamine (SALOPHEN) as derivatization reagent. The detection wavelength of ultraviolet was 226 nm with Hypersil ODS2 C18 column (250 mm×4.6 mm, 5 μ m) as stationary phase, and pH 10.0 methanol-water (80:20, v/v) as mobile phase. The linear range of Pb2+ was 0.1-30 mg/L and the linear correlation coefficient was 0.9988. The limit of detection was 0.01 mg/L with the recoveries of 91.87%-96.96%. The method has high sensitivity and stability with satisfactory results, which can be used for the detection of Pb2+ in tea samples.

Key words: bis(salicylaldehyde)-o-phenylenediamine, heavy metal ions, high performance liquid chromatography (HPLC), tea

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