Amperometric Determination of Hydrogen Peroxide in Whitening Gels Using Boron-doped Diamond Electrode

被引：0
作者：
Gustavo C. Azevedo
Roberto H. S. Castro
Maria Auxiliadora C. Matos
Renato Camargo Matos
机构：
[1] Universidade Federal de Juiz,NUPIS (Nucleo de Pesquisa em Instrumentacao e Separates Analtticas), Departamento de Qulmica, Instituto de CiSncias Exatas
[2] de Fora,undefined
来源：
Analytical Sciences | 2018年 / 34卷
关键词：
Whitening gel; hydrogen peroxide; boron-doped diamond electrode; amperometry;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The aim of this work was to develop an electrochemical cell and a methodology based on an amperometric determination of hydrogen peroxide in whitening gel samples under a boron-doped diamond electrode using flow injection analysis. Different parameters were evaluated to obtain the best conditions of analysis: among them, the flow of electrolyte at 2.8 mL min–1, the loop sampling 175 μL (28.5 cm), an analytical length of 159 μL (25 cm) and an applied potential of +0.60 V vs. Ag/AgCl(sat). The proposed method was suitable in terms of precision of results (RSD <10%); the accuracy was confirmed in the analysis of the gels through addition and recovery studies with results between 74 and 107%. The method was then applied to the analysis of tooth-whitening gel samples, acquired in different cities of the region. Regarding the results, a medium concentration value of 2.39% (w/w) was observed.
引用
收藏
页码：913 / 917
页数：4
相关论文
共 86 条
  • [1] Watts A(2001)undefined Br. Dental J. 190 309-undefined
  • [2] Joiner A(2004)undefined J. Dent. 32 3-undefined
  • [3] Joiner A(2006)undefined J. Dent. 34 412-undefined
  • [4] Haywood V B(1989)undefined Quintessence Int. 20 173-undefined
  • [5] Heymann H O(2004)undefined J. Dent. 32 27-undefined
  • [6] Joiner A(2004)undefined J. Dent. 32 35-undefined
  • [7] Thakker G(2011)undefined Dental Clinics of North America 55 255-undefined
  • [8] Cooper Y(2007)undefined J. Dent. 35 8-undefined
  • [9] Joiner A(2012)undefined J. Dent. 40 e17-undefined
  • [10] Schemehorn B(2009)undefined Revista Odonto Ciência 24 161-undefined
123456789