Determination of cinnamic acid in human urine by flow injection chemiluminescence

Química Nova

Liu, Yanfeng¹  Wang, Shumin¹  Zheng, Xingwang¹  Normal University, Xinxiang, China¹  Shaanxi Normal University, China¹  Cui, Fengling¹  Fan, Xuemei¹  Su, Zhikui¹  Chen, Fengying¹  Liu, Ping¹  Shuoluo University, China¹ 

关键词: flow injection chemiluminescence;    potassium permanganate;    cinnamic acid.;   

DOI  :  10.1590/S0100-40422011000800020

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

It was found that cinnamic acid can react with potassium permanganate in the acidic medium and produce chemiluminescence, which was greatly enhanced by glyoxal. Under the optimum conditions, the linear range for the determination of cinnamic acid was 1.0×10-8 to 1.0×10-4 mol L-1 with a detection limit of 8.0×10-9 mol L-1, the relative standard deviation was 1.7% for 2.0×10-6 mol L-1 cinnamic acid solution in nine repeated measurements. This method was found to be novel0simple0fast and sensitive, it was successfully applied to the determination of cinnamic acid in human urine. Furthermore, the possible reaction mechanism was also discussed.

【 授权许可】

Unknown