Determination Of Lead And Cadmium In Water Samples By Adsorptive Stripping Voltammetry Using A Bismuth Film/1-Nitroso-2-Napthol/Nafion Modified Glassy Carbon Electrode
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE(2016)
摘要
The application and validation of a glassy carbon electrode modified with Nafion, 1-nitroso-2-naphthol and bismuth film (GC/NF-NN/BiFE) was studied using adsorptive stripping voltammetry (AdSV) for the determination of Pb2+ and Cd2+ in tap water. The parameters studied and optimized were pH, 1-nitroso-2-naphthol concentration (C-NN), Nafion concentration (C-NF), adsorption potential (E-acc) and adsorption time (t(acc)). Optimal conditions were pH 4.5 (acetate buffer solution 0.10 mol L-1); E-acc: -1.30 V; t(acc): 120 s; C-NN : 0.10% w/v, C-NF: 0.50 wt %. The detection and quantification limits were 0.08 and 0.29 mu g L-1 for Pb2+ and 0.07 and 0.24 mu g L-1 for Cd2+, with a linear range of 10 to 70 mu g L-1. Certified reference material (ICP Multi Element Standard) and synthetic samples were determined to validate the methodology, with satisfactory results. The stripping voltammetry method was tested on tap water.
更多查看译文
关键词
Adsorptive stripping voltammetry, bismuth film electrode, Nafion, cadmium and lead
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要