%0 Journal Article
%T Rapid assay of picogram level of sudan I in hot chilli sauce by flow injection chemiluminescence
%A Xiaofei Gao
%A Houyong Liu
%A Zhenghua Song
%A Xili He
%A Faxin Dong
%J Spectroscopy: An International Journal
%D 2007
%I Hindawi Publishing Corporation
%R 10.1155/2007/704349
%X A novel chemiluminescence method for the assay of sudan I was designed using flow injection with chemiluminescence detection. The proposed method was based on the increment effect of sudan I on the chemiluminescence intensity in the luminol¨CKIO4 system. The increment of chemiluminescence intensity was correlated with the sudan I concentration in the range from 0.1 to 10 pg ml£¿1, and the determination could be performed in 0.5 min in flow rate of 2 ml min£¿1, including sampling and washing, giving a throughput of 120 h£¿1 with a relative standard deviation of less than 5.0%. The method had been successfully applied to the assay of sudan I in Pixian douban, Golden mark guilin chilli sauce and Golden mark satay sauce, and the recovery was 90.0¨C103.8%.
%U http://www.hindawi.com/journals/spectroscopy/2007/704349/abs/