微分电位溶出分析法应用于金膜电极的研究

Study on the Application of Differetinal Potentiometric Stripping Analysis to a Gold Film Electrode

本文介绍将微分电位溶出分析法应用于金膜电极,建立了相应的理论体系和应用条件。可使用的金膜厚度在1.8×10^(-7)～4.3×10^(-7)cm范围。检测限较原法降低近两个数量极。用本法测定花生乳中的铜,回收率在94～102%间。

The application of differential potentiometric stripping analysis (DPSA) to a gold film elec-trode (GFE) is studied. The theory and application of DPSA with a GFE are established in thispaper. The suitable thickness of GFE is 1.8×10^(-7)-4.3×10^(-7)cm. The sensitivity of DPSAwith GFE is nearly two order of that in former method. The recovery of copper in peanutmilk is 94% to 102% by this method.