...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electroanalysis >Simultaneous Detection of Copper, Lead and Zinc on Tin Film/Gold Nanoparticles/Gold Microelectrode by Square Wave Stripping Voltammetry
【24h】

Simultaneous Detection of Copper, Lead and Zinc on Tin Film/Gold Nanoparticles/Gold Microelectrode by Square Wave Stripping Voltammetry

机译：方波溶出伏安法同时检测锡膜/金纳米颗粒/金微电极上的铜，铅和锌

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, three heavy metals (Cu(II), Pb(II) and Zn(II)) in wide potential window were simultaneously detected on tin film/gold nanoparticles/gold microelectrode (Sn/GNPs/gold microelectrode) by the method of square wave stripping voltammetry. The Sn/GNPs/gold microelectrode was fabricated by in situ plating of a Sn film on a gold nanoparticles (GNPs) modified gold microelectrode. The influence of hydrogen overflow on stripping of Zn(II) on the gold microelectrode was reduced by modification of GNPs, which made the stripping potential of target metals shift positively. The interference of sulfhydryl groups was reduced and the selectivity of the microelectrode was improved due to the addition of Sn in the detection solution. After accumulation at -1.4V for 300s in acetate buffer solution (0.1molL ~(-1), pH4.5), the Sn/GNPs/gold microelectrode revealed a good linear behavior in the examined concentration ranges from 5 to 500μgL ~(-1) for Cu(II) and Pb(II), and from 10 to 500μgL ~(-1) for Zn(II), with a limit of detection of 2μgL ~(-1) for Cu(II), 3μgL ~(-1) for Pb(II) and 5μgL ~(-1) for Zn(II) (S/N=3). When compared with a Sb/GNPs/gold microelectrode and a Bi/GNPs/gold microelectrode, the Sn/GNPs/gold microelectrode showed the best stripping performance to Cu(II), Pb(II) and Zn(II). As a new type of environment-friendly electrode, the Sn/GNPs/gold microelectrode has potential applications for detection of heavy metals.
机译：在这项工作中，通过该方法，同时在锡膜/金纳米颗粒/金微电极（Sn / GNPs /金微电极）上同时检测了宽电位窗中的三种重金属（Cu（II），Pb（II）和Zn（II））。方波溶出伏安法通过在金纳米颗粒（GNPs）修饰的金微电极上原位镀锡膜来制造Sn / GNPs /金微电极。通过修饰GNPs减少了氢溢流对金微电极上Zn（II）溶出的影响，使目标金属的溶出电位正向移动。由于在检测溶液中添加了Sn，因此减少了巯基的干扰，并改善了微电极的选择性。在-1.4V的乙酸盐缓冲溶液（0.1molL〜（-1），pH4.5）中累积300s后，Sn / GNPs /金微电极在5至500μgL〜（-）的浓度范围内表现出良好的线性行为1）对于Cu（II）和Pb（II），对于Zn（II）从10到500μgL〜（-1），对于Cu（II）的检测限为2μgL〜（-1），3μgL〜（对于Pb（II）为-1），对Zn（II）为5μgL〜（-1）（S / N = 3）。与Sb / GNPs /金微电极和Bi / GNPs /金微电极相比，Sn / GNPs /金微电极对Cu（II），Pb（II）和Zn（II）的剥离性能最佳。 Sn / GNPs /金微电极作为一种新型的环保电极，在重金属检测中具有潜在的应用前景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号