SO3(2-)-based chemiluminescence in unbuffered solution with ClO2 as oxidant and its analytical application.
In this paper, SO3(2-)-chemiluminescence (CL) system in unbuffered solution with ClO2 as oxidant is proposed. ClO2 could oxidize sulfite in unbuffered solution to produce CL emission, and riboflavin could sensitize the ClO2-SO3(2-)-based CL system. The ClO2-SO3(2-)-riboflavin CL reaction was chosen as a model system and explored the possibility of SO3(2-)-based CL system in unbuffered solution. Compared with the reported SO3(2-)-based CL system in strong acid media, the proposed CL system owns its advantages. Combined with flow-injection analysis, the proposed CL system was applied to measurement of riboflavin in pharmaceuticals.
Li
Baoxin
B
Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, PR China. libx29@hotmail.com
Deng
Qingwen
Q
Xu
Chunli
C
D002021:Buffers; D002563:Cerium / Q000737:chemistry; D017606:Chlorine Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008163:Luminescent Measurements / Q000379:methods*; D017895:Manganese Compounds / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012044:Regression Analysis; D012256:Riboflavin / Q000032:analysis; D012996:Solutions; D013447:Sulfites / Q000737:chemistry*
D002021:Buffers; D017606:Chlorine Compounds; D017895:Manganese Compounds; D016877:Oxidants; D010087:Oxides; D012996:Solutions; D013447:Sulfites; C048856:permanganic acid; D002563:Cerium; C025109:chlorine dioxide; D012256:Riboflavin