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张勤, 周丽沂. 微分溶出计时电位法测定地质物料中微量铜[J]. 岩矿测试, 1995, (1): 45-48.
引用本文: 张勤, 周丽沂. 微分溶出计时电位法测定地质物料中微量铜[J]. 岩矿测试, 1995, (1): 45-48.
Determination of Micro-amounts of Copper in Geological Materials by Differential Stripping Chronopotentiometry[J]. Rock and Mineral Analysis, 1995, (1): 45-48.
Citation: Determination of Micro-amounts of Copper in Geological Materials by Differential Stripping Chronopotentiometry[J]. Rock and Mineral Analysis, 1995, (1): 45-48.

微分溶出计时电位法测定地质物料中微量铜

Determination of Micro-amounts of Copper in Geological Materials by Differential Stripping Chronopotentiometry

  • 摘要: 在0.2mol/L HCl-1.0mol/LNaCl-0.15mol/L抗坏血酸介质中,用电流氧化微分溶出计时电位法直接测定地质物料中微量Cu。富集电位-0.55V,时间20~40s;电极转速2500r/min;溶出电流0.2~1μA;记录电位范围-0.2~-1.20V;清洗电位-0.10V,时间10s。方法检出限0.2μg/g,线性范围2~400ng/ml,精密度(RSD,n=11,4.1μg/

     

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