摘要
研究了槐定碱在碱性联吡啶钌(Ru(bpy)32+)水溶液(pH 9.0)中电致化学发光行为。在玻碳电极上,槐定碱中的氨基氮于+1.30 V(vs.Ag/AgCl)左右被氧化为氮正自由基离子,该自由基离子与Ru(bpy)32+反应生成激发态的Ru(bpy)32+*而发光。利用原位在线电致化学发光方法,槐定碱的检出限为1.0×10-10g/mL。
Eleetrogenerated chemiluminescence method based on tris （2,2＇ -bipyridine）ruthenium （Ⅱ） [Ru（bpy）3^2＋] and sophoridine （SRI） in an aqueous alkaline buffer solution （pH 9.0） was studied. The light emission was mainly caused by the eletro oxidation reaction between tertiary amino group on SRI and Ru（bpy）3^2＋ in a thin layer flow cell equipped with a glassy carbon disc electrode （22.1 mm^2） at the potential of ＋ 1. 50 V （vs. Ag/AgCl）. The luminescence wavelength of 610 am confirmed that ECL was caused by Ru（bpy）3^2＋^＊ to its ground state. Using this method, the detection limit of sophoridine was 1.0× 10^-10 g/mL.
出处
《分析科学学报》
CAS
CSCD
2006年第6期710-712,共3页
Journal of Analytical Science
基金
福建省科技项目(No.2005I-030)
关键词
槐定碱
电致化学发光
联吡啶钌
流动注射分析
Electrogenerated chemiluminescence
Ruthenium complex
FIA
Sophoridine
