Determination of cinnamic acid in human urine by flow injection chemiluminescence

Química Nova

Ping Liu¹  Fengling Cui²  Xingwang Zheng³  Shumin Wang⁴  Zhikui Su⁴  Fengying Chen⁴  Yanfeng Liu⁴  Xuemei Fan⁴ 

[1] ;Normal University;Shaanxi Normal University;Shuoluo University;

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

DOI  :  10.1590/S0100-40422011000800020

来源: DOAJ

【 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