食品科学 ›› 2003, Vol. 24 ›› Issue (5): 130-132.

• 分析检测 • 上一篇    下一篇

热解石墨管——电热原子吸收法直接测定植物样品中微量锗

 梁淑轩, 孙汉文, 康维钧, 哈婧, 申世刚   

  1. 河北省分析科学技术重点实验室河北大学化学与环境科学学院
  • 出版日期:2003-05-15 发布日期:2011-12-13

Study on Pyrolysis Graphite Tube-atomic Absorption Method to Assay the Total Trace Ge in Plant Sample

 LIANG  Shu-Xuan, SUN  Han-Wen, KANG  Wei-Jun, HA  Jing, SHEN  Shi-Gang   

  • Online:2003-05-15 Published:2011-12-13

摘要: 研究了植物样品中微量锗的测定方法,选择了仪器最佳条件;考察了不同基体改进剂对灵敏度的影响,以钯为改进剂,最高允许灰化温度和原子化温度分别为1200和2500℃,方法相对标准偏差为3.11%,利用热解石墨管测定了灵芝标准品和香菇中的锗,结果令人满意。

关键词: 锗, 植物样品测定, 塞曼石墨炉原子吸收

Abstract: Methods developed to assay the total trace germanium in plant samples by Zeeman GFAAS were studied.Whendifferent matrix modifiers were evaluated,palladium nitrate produced the optimum Ge signal.The optimum pyrolysis andatomization temperatures for tin analysis were 1200℃ and 2400℃,respectively.The extraction of total germanium fromsamples was best performed by sample digestion with mixture of HNO3-HClO4 and sample dilution extracts with 1% HNO3.Finally,the germanium analytical and extraction method developed in our investigation was satisfactorially used to determine Gecontent in plant samples.

Key words: germanium, Zeeman GFAAS, plant samples analysis