引用本文:	苏循荣,林淳,杨孙楷.红树属植物体中硒的示波极谱法测定[J].海洋科学,1988,12(1):24-27.

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红树属植物体中硒的示波极谱法测定
苏循荣¹, 林淳¹, 杨孙楷¹
厦门大学化学系

摘要:

本文介绍了用催化示波极谱法测定红树属植物中微量硒的分析方法。并通过条件试验及对红树属植物中微量硒分析的结果中得出,该法具有选择性好、操作简便等优点。

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THE DETERMINATION OF SELENIUM IN MANGROVE BY OSCILLOSCOPE POLAROGRAPHY

Abstract:

Determination of Se(Ⅳ) in mangrove plants by Oscilloscope polarography method. This paper describes an analysis of trace selenium in mangrove plants by catalytic oscillo-polarography. The samples of mangrove plants is digested with 1:3 HClO₄-HNO₃ on a lower temperature hot-plate. In HClO₄-Na₂SO₃-NH₄Cl-NH₄OH-EDTA-KIO₄ system a clear, sensitive and stable Catalytic polarographic wave of Se (Ⅳ) is obtained. Its largest peak potential in differential oscilloscope is -0.85Ⅴ. The peak current of the wave is proportional to the concentration of Se(Ⅳ) in the range of 0.01-0.2μg/25ml, detection limit of 0.2 ppb was obtained. The productivity is over 90%.

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