食品科学 ›› 2004, Vol. 25 ›› Issue (9): 157-159.

• 分析检测 • 上一篇    下一篇

悬浮液进样—原子吸收光度法直接测定茶叶中铜

 赵登山   

  1. 淮阴工学院生化系
  • 出版日期:2004-09-15 发布日期:2011-10-24

Fast Determination of Trace Copper in Tea by FAAS Adopting Suspension Sample Introduction Method

 ZHAO  Deng-Shan   

  1. Department of Chemical Engineering, Huaiyin Institute of Technology
  • Online:2004-09-15 Published:2011-10-24

摘要: 悬浮液进样-原子吸收光谱法测定茶叶中铜,样品经烘干、研磨、过筛配置琼脂悬浮液,直接喷入空气-乙炔火焰测定。本法测定加标回收率为98.3%~100.3%,方法的RSD小于2.5%(n=6),检测限为0.038μg/ml。

关键词: 悬浮液进样, 原子吸收光谱, 茶叶,

Abstract: Fast determination of copper in tea by suspension sample introduction-flame atomic absorption spectrometry(FAAS). Samples were dried by the oven, ground down, sieved and made into agar suspension, to be injected into air-acetyleneflame for determination. Recoveries of standard addition were 98.3%~100.3%, RSD was less than 2.5%(n=6) and the detectionlimit was 0.038μg/ml. 

Key words: suspension sample introduction, flame atomic absorption spectrometry(FAAS), tea, copper