Determination of ascorbic acid based on Gold nanoparticles-L-alanine/GCE

摘要：

A Gold nanoparticles-L-alanine modified glass electrode has been successfully fabricated by using layer-by-layer self-assembly technology and used for determination of ascorbic acid. First, the clean electrode was immersed into L-Alanine solution to acquire a L-Alanine film on the surface of GCE and dried at room temperature, then the gold colloid was dipped onto the L-Alanine film. The electrochemical behaviors of ascorbic acid at the modified electrode were investigated by cyclic voltammetry and currenttime techniques. The results showed that the sensor produced high sensitivity and good stability to ascorbic acid and the current was linear with the concentration of ascorbic acid in the range of 1.20 ×10-5 to 1.60×10-4 mol/L with a detection limit of 1.00×10-5 mol/L.

关键词： gold nanoparticles L-alanine modified electrode ascorbic acid

作者: Kuang Haiyan He Jia-hong Xu Qiang Song Zhong-rong

作者单位: Chemistry and Environment Engineering College,Chongqing University of Arts and Sciences Yongchuan,China

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 498-502

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）