引用本文:
杨春海. 漆酚铝高分子修饰碳糊电极用于溶出伏安法测定痕量银[J]. 应用化学,
2003, 20(6): 597-599.
Citation: YANG Chun-Hai. Anodic Stripping Voltammetric Determination of Trace Silver Using Polymeric Compound of Urushiol-Al Modified Carbon Paste Electrode[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 597-599.
Citation: YANG Chun-Hai. Anodic Stripping Voltammetric Determination of Trace Silver Using Polymeric Compound of Urushiol-Al Modified Carbon Paste Electrode[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 597-599.
漆酚铝高分子修饰碳糊电极用于溶出伏安法测定痕量银
English
Anodic Stripping Voltammetric Determination of Trace Silver Using Polymeric Compound of Urushiol-Al Modified Carbon Paste Electrode
Abstract:
A polymeric compound of urushiol-Al modified carbon paste electrode was examined for the determination of trace silver in water.In 0.1 mol/L KNO3 and HAc-NaAc solution (pH=5.5),silver is accumulated on the surface of the modified carbon paste electrode at -0.1 V(vs.SCE).In the following step,a sensitive oxidation peak of Ag+ at 0.22 V could be observed by anodic stripping voltammetry.The peak current is linearly related to the concentration of silver ranged from 4.0×10-9 mol/L to 2.5×10-7 mol/L.The detection limit (signal-to-noise=3) is 1.5×10-10 mol/L after 20 min accumulation,the average recovery is 100.3%.
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