食品科学 ›› 2004, Vol. 25 ›› Issue (8): 149-152.

• 分析检测 • 上一篇    下一篇

单扫描示波极谱法连续测定榛蘑中的锌、铁、锰

 李巧云, 陈爱英, 居红芳, 季海燕   

  1. 常熟理工学院化学系
  • 出版日期:2004-08-15 发布日期:2011-10-24

Simutaneous Determination of Microamounts of Zn、Fe、Mn in Arimillaria Mellea by Single Sweep Polarography

 LI  Qiao-Yun, CHEN  Ai-Ying, JU  Hong-Fang, JI  Hai-Yan   

  1. Department of Chemistry, Changshu Science and Technology College
  • Online:2004-08-15 Published:2011-10-24

摘要: 本文对单扫描示波极谱法同时测定榛蘑中的锌、铁、锰微量元素的含量进行了研究,选用0.4mol/L乙二胺—2.5×10-3mol/L三乙醇胺—0.1mol/L硫氰酸钾为底液。锌、铁、锰峰电位分别为-1.46V、-1.69V、-1.78V(υs.SCE),线性范围:0.2~1.2μg/ml Zn、0.2~1.6μg/ml Fe、0.04~0.5μg/ml Mn,锌、铁、锰的检出限分别为0.015μg/ml、0.024μg/ml、0.018μg/ml,回收率为96.6%~103.3%。此方法准确、简便、快速、灵敏度高。

关键词: 示波极谱法, 锌, 铁, 锰, 榛蘑

Abstract: A method for the determination of Zn、Fe、Mn simultaneously in a supporting solution of 0.4mol/LethyLenediamine、2.5×10-3mol/L triethanolamine and 0.1mol/L potassium thiocyanate by single sweep polarography hasbeen established. The peak potentials were -1.46Zn、-1.69V Fe、-1.78V Mn (υs.SCE). The peak heights were linearlyproportional to the concentration of iron over the range of 0.2~1.2μg/ml Zn、 0.2~1.6μg/ml Fe、0.04~0.5μg/ml Mnrespectively. The detection limits were 0.015μg/ml for Zn、 0.024μg/ml for Fe、0.018μg/ml for Mn. This method wasaccurate, simple and fast with high selectivity.

Key words: single sweep polarography, zinc, iron, manganese, arimillaria mellea..