| 控制电位库仑法测定银砷汞铜单元素标准溶液中的离子含量 |
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| 引用本文： | 汤高华.控制电位库仑法测定银砷汞铜单元素标准溶液中的离子含量[J].化学分析计量,1993(2). |
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| 作者姓名： | 汤高华 |
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| 作者单位： | 国家标准物质研究中心 北京 |
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| 摘 要： | 研究了用控制电位库仑法测定银、砷、汞、铜单元素标准溶液(1000ug/mL)中离子的含量,进行了控制电位、支持电解质种类等条件的选择,使得测定背景电流小,测定精度优于0.1％,并对样品进行了均匀性、稳定性检验。
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| 关 键 词： | 控制电位库仑法 标准溶液 支持电解质 背景电流 均匀性 稳定性 |
DETERMINATION OF IONIC CONTENT OF SILVER ,ARSENIC,MERCURY AND COPPER IN THE STANDARD SOLUTION OF SINGLE ELEMENT BY CONTROLLED POTENTIAL COULOMETRY |
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| Tang Gaohua.DETERMINATION OF IONIC CONTENT OF SILVER ,ARSENIC,MERCURY AND COPPER IN THE STANDARD SOLUTION OF SINGLE ELEMENT BY CONTROLLED POTENTIAL COULOMETRY[J].Chemical Analysis And Meterage,1993(2). |
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| Authors: | Tang Gaohua |
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| Institution: | National Research Center of Certified Reference Materials |
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| Abstract: | The selection of condition on controlled potential ,the kinds of supporting electrolyte and so on lessens the background current and makes the standard deviation less than 0.1%. It also carries on determination of homogeneity and stability on the sample. |
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| Keywords: | Controlled potential coulometry standard solution supporting electrolyte background current homogeneity stability |
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