| 矿石中微量铍的极谱测定 |
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| 引用本文： | 周继兴.矿石中微量铍的极谱测定[J].岩石矿物学杂志,1982,1(3):64-66. |
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| 作者姓名： | 周继兴 |
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| 作者单位： | 地质部岩矿测试技术研究所 |
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| 摘 要： | 铍的极谱测定研究不多,最近已有人报导了用铍试剂Ⅲ测定矿石中微量铍的催化极谱法。本文是在“镀与钍试剂Ⅰ的极谱研究”的基础上,用抗坏血酸消除铬酸根的干扰,用EDTA消除铁、铅、镉等干扰,并应用于矿石中微量铍的测定。本法基于铍在NH_4Cl-NH_4OH介质中与钍试剂Ⅰ生成络合物,在-0.55伏产生灵敏度较高的极谱波,可测到0.005微克/毫升的铍。本法具有干扰少,可直接测定矿石中微量铍。
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Polaroglaphic Determination of Trace Amount of Beryllium in ores |
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| Abstract: | Berylluim forms a complez with Thoron I in NH4CI- NH4OH solution at pH8-10.This complex produces a sensitive polarographic wave in this supporting electrolyte at-0.55 V. The magnitude of the current of Beryllium is proportional to its concentration from 0.05 to 0.6ppm. The interfering ions can be eliminated by addition of EDTA.
This method has been applied to the determination of trace amounts of Berylluim in ores. |
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