Determination of cinnamic acid in human urine by flow injection chemiluminescence
AUTOR(ES)
Fan, Xuemei, Wang, Shumin, Su, Zhikui, Chen, Fengying, Liu, Yanfeng, Liu, Ping, Zheng, Xingwang, Cui, Fengling
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2011
RESUMO
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.
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