Determination of silver ions based on the electrogenerated chemiluminescence of silver ions/peroxydisulfate

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• 作者：Haiyan Wang ; Xinxin Fan ; Yan Wang
• 关键词：Electrogenerated chemiluminescence ; Silver ion ; Peroxydisulfate
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：408
• 期：25
• 页码：7113-7119
• 全文大小：816 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Food Science
  Inorganic Chemistry
  Physical Chemistry
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1618-2650
• 卷排序：408

文摘

In this work, a simple, sensitive, and selective method for the determination of silver ions (Ag+) was proposed on the basis of the enhancement of Ag+ on the electrogenerated chemiluminescence (ECL) of peroxydisulfate (S₂O₈2−), which can be attributed to the obvious electrocatalytic reduction of S₂O₈2− by Ag+, giving rise to more abundant sulfate radical anion (SO₄•−). Under optimal conditions, a linear range from 4 to 500 nM (R = 0.997) with a detection limit of 2.5 nM (S/N = 3) was achieved for the detection of Ag+. The Ag+/S₂O₈2− ECL system could not only provide an assay protocol for the determination of Ag+ but also offer an effective way to enhance the ECL of S₂O₈2−, which may act as a promising platform for the detection of other species such as 4-chlorophenol.