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Published on: February 16, 2022
The second chemiluminescence emission of luminol-periodate-menadione sodium bisulfite system and its analytical
Baoxin Li1, Xiaoyan Zhang, Chengxiao Zhang
1Department of Chemistry, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, China. libx29@hotmail.com
Abstract:
In this paper, a new chemiluminescence phenomenon described as the second chemiluminescence emission was observed when menadione sodium bisulfite was injected into a reaction mixture of luminol and potassium periodate, in which luminol was oxidized by excess amount of potassium periodate for about 24h. The mechanism of the second chemiluminescence emission was proposed based a series of experiments. Moreover, our experiment discovered that the second chemiluminescence intensity was a linear function of the concentration of menadione sodium bisulfite in the range of 2 x 10(-9) to 4 x 10(-5) g L(-1). Based on this phenomenon, a new flow-injection method for the determination of menadione sodium bisulfite has been established.
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