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电化学(中英文) ›› 2002, Vol. 8 ›› Issue (1): 100-104.  doi: 10.61558/2993-074X.1448

• 研究论文 • 上一篇    下一篇

薄层流动时安法测定电镀废水中的铜

林新华,陈伟   

  1. 福建医科大学药学系,福建医科大学药学系 福建福州350004 ,福建福州350004
  • 收稿日期:2002-02-28 修回日期:2002-02-28 出版日期:2002-02-28 发布日期:2002-02-28

Determination of Copper in the Waste Water of Plating by Chronocoulometry for Flowing Solution

LIN Xin_hua, CHEN Wei   

  1. (Department of Pharmaceutical,Fujian Medical University,Fuzhou 350004,China
  • Received:2002-02-28 Revised:2002-02-28 Published:2002-02-28 Online:2002-02-28

摘要: 应用薄层流动时安法测定电镀废水中铜的含量 .试样溶液由流动状态转换为静止状态时的时库仑电量与铜离子浓度 (2~ 16mg/L)呈良好的线性关系 .对样品溶液进行 8次平行测定的相对标准偏差小于 0 .1% ,标准加入法测定的回收率为 99%~ 10 3% .该方法克服了电容电流及电极表面性质改变等噪声干扰 ,具有快速灵敏、准确、再现性好的优点

关键词: 流动时安法, 铜, 测定

Abstract: The chronocoulometry for flowing solution was devoloped and applied to the detemination of copper(Ⅱ) in the waste water of plating.The linear range of copper(Ⅱ) was 2~16mg/L,and the relative standard deviation was less than 0.1% ( n =8).The recovery was 98%~103% for copper(Ⅱ) in the waste water.Chronocoulometry for flowing solution overcomed noise disturbance resulting from capacity current and variety of property of electrode surface.This method was sensitive,accurate and well reproducible.

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