Determination of cinnamic acid in human urine by flow injection chemiluminescence

Quimica nova

Zheng, Xingwang¹  Liu, Ping²  Liu, Yanfeng³  Wang, Shumin³  Fan, Xuemei³  Su, Zhikui³  Chen, Fengying³ 

[1] Normal University, Xinxiang, China;Shaanxi Normal University, China;Shuoluo University, China

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

【 授权许可】

CC BY