期刊论文

中文

化学试剂

0258-3283

2011

33

1

47-50

10.3969/j.issn.0258-3283.2011.01.013

湖南省科技厅基金项目（2008FJ3024） 湖南省教育厅基金项目（08C174） 湖南省重点建设学科资助项目 湖南省高校创新平台开放基金项目（09k099）

本校为第一机构

研究了尿酸在羧基化短碳纳米管修饰碳糊电极上的伏安行为.结果表明:在0.20 mol/L磷酸盐(pH 5.79)介质中,此修饰电极对尿酸具有较好的电催化活性,该氧化峰的二阶导数峰电流与尿酸浓度在7.0×10-7~1.0×10-5mol/L范围内呈线性关系,相关系数为0.998 8,检出限(S/N=3)为3.0×10-7mol/L.用该法直接测定某样品中尿酸,结果满意

The voltammetric behavior of uric acid on the short carboxyl multi-wall carbon nanotubes-modified carbon paste electrode was studied.The results showed that in a medium of 0.20 mol/L phosphate buffer with a pH of 5.79,the modified electrodes possessed good electro-catalytic activity towards uric acid.The linear relationship between the peak current and the uric acid concentration was found in the range of 7.0×10^-7～1.0×10^-5 mol/L with a correlation coefficient of 0.996.The detection limit was found to be 1.0×10^-9 mol/L（S/N=3）.The propos...