期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 7, 期 2, 页码 130-134出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2004.11.017
关键词
natural zeolite; voltammetry; carbon paste electrode; copper; real samples
Natural zeolite modified carbon paste electrode (NZMCPE) was developed for the voltammetric determination of Cu (11). Copper (11) was selectively preconcentrated, at open circuit, on the NZMCPE. The measurements were carried out by using differential pulse cathodic stripping voltammetry. Linear response to copper (II) was found in the 5.0 x 10(-8) - 5.0 x 10(-6) M (r: 0.9990) concentration range, with a detection limit estimated at 1.5 x 10(-8) M. The multiple determinations (n = 6), following a preconcentration detection-regeneration cycle, shown a relative standard deviation of 2.22% at Cu (II) concentration of 2.0 x 10(-6) M. The developed method was also applied to the determination of copper in two model solutions and two real samples. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据