Detection of 1,3-dihydroxyacetone by tris(2,2′-bipyridine)ruthenium(II) electrochemiluminescence

• Published in: Analytical and bioanalytical chemistry Vol. 410; no. 9; pp. 2315 - 2320
• Main Authors: Sun, Jianrui, Gao, Wenyue, Qi, Liming, Song, Yufeng, Hui, Pan, Liu, Zhongyuan, Xu, Guobao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2018; Springer Nature B.V
• Subjects: Analytical Chemistry; Biochemistry; Carbon; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Chromatography; Dihydroxyacetone; Electrochemiluminescence; Electrodes; Electrons; Food additives; Food Science; Laboratory Medicine; Monitoring/Environmental Analysis; Oxalic acid; Oxidation; Reagents; Research Paper; Ruthenium; Ruthenium compounds; Sodium; Sodium oxalate; 1,3-Dihydroxyacetone; Tris(2,2′-bipyridine)ruthenium(II); Coreactant; Electrochemiluminescence
• ISSN: 1618-2642; 1618-2650
• DOI: 10.1007/s00216-017-0833-5

1,3-Dihydroxyacetone, a common cosmetic material and food additive, has been successfully explored as an efficient electrochemiluminescence coreactant of Ru(bpy) 3 2+ for the first time. It is about 25 times more effective than the well-known coreactant sodium oxalate. The high electrochemiluminescence efficiency allows sensitive detection of 1,3-dihydroxyacetone without any derivatization. The electrochemiluminescence method shows two linear electrochemiluminescence responses over the range of 5.0–500 μM and 500 μM–6.0 mM with a detection limit of 1.79 μM. The proposed method is at least two orders of magnitude more sensitive than other reported methods. Graphical abstract ECL intensity-potential profile of 1,3-dihydroxyacetone (DHA) and oxalate