食品科学 ›› 2006, Vol. 27 ›› Issue (1): 193-196.

• 分析检测 • 上一篇    下一篇

茶叶中磷、钾、铅、锌等17种元素的快速测定方法研究

 石元值, 马立峰, 韩文炎, 阮建云   

  1. 中国农业科学院茶叶研究所 农业部茶叶化学工程重点实验室
  • 出版日期:2006-01-15 发布日期:2011-09-05

Study on Simultaneous Determination of Phosphorus,Potassium,Lead,Zinc etc. Altogether 17 Elements in Tea

 SHI  Yuan-Zhi, MA  Li-Feng, HAN  Wen-Yan, RUAN  Jian-Yun   

  1. Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Labortary of Tea Chemical Engineering, Ministry of Agriculture
  • Online:2006-01-15 Published:2011-09-05

摘要: 采用微波消煮、敞开式湿法消化及干灰化前处理-ICP-OES法对茶叶中的磷、钾、铅、锌等17种元素同时进行了检测,方法简便、准确度高,并对样品前处理、共存元素干扰、方法准确度等因素进行了探讨。方法回收率都在81.6%~107.2%之间,其相对标准偏差在0.23%~8.92%之间,方法能满足茶叶的测定要求,并且大大减少了检测者的工作强度。

关键词: 样品前处理, ICP-OES, 茶叶, 磷、钾、铅、锌等17种元素

Abstract: A method simultaneously determining of Phosphorus,Potassium,Lead,Zinc etc. altogether 17 elements in tea by ICP-OES was developed. This paper study the method of dealing with the tea sample and determination conditions by ICP-OES. Influence such as elements interference were discussed. The rate of the recoveries of 17 elements is from 81.6% to 107. 2%, with relative standard deviation (RSD) is from0.23% to 8.92%. Analytical results of standard reference material (tea) obtained by the means of this method are in good agreement with the reference values. The method is satisfactory for tea.

Key words: method of dealing tea sample, ICP-OES, tea, Phosphorus,Potassium,Lead,Zinc etc. altogether 17 elements