摘要
构建一种基于Ru(bpy)3^2+掺杂SiO2/漆酚复合物修饰电极的电化学发光传感器。利用厚朴酚对修饰电极电化学发光的增敏作用对厚朴酚进行检测。对影响修饰电极电化学发光的各因素进行了实验研究,优化了反应条件和各项测定参数。在最佳实验条件下,在8×10^-8~8×10^-5 g/L的质量浓度范围内,发光强度增量与其浓度呈良好的线性关系,检出限3.7×10^-8 g/L;对浓度为8×10^-6 g/L厚朴酚进行8次平行测定的RSD为3.5%。对合成样品中厚朴酚测定的回收率为99.8%~103%,表明传感器表现出良好的重现性和稳定性。
An electrochemiluminescence(ECL)sensor for magnolol was developed based on tris(2,2-bipyridyl)ruthenium(Ⅱ)(Ru(bpy)3^2+)-doped silica(RuDS)-urushiol composits film modified glassy carbon electrode(GCE).The ECL analytical performances of this ECL sensor for magnolol based on its enhancement ECL emission of Ru(bpy)3^2+ were investigated.The experimental parameters influencing the ECL intensity were studied.The analytical approach based on the system was developed under the optimum condition.The enhanced ECL intensity was linear with the magnolol concentration in the range of 8×10^-8-8×10^-5 g/L.The detection limit was 3.7×10^-8 g/L and the relative standard deviation was 3.5%for 8μg/L magnolol(n=8).The good recoveries of melamine in the range of 99.8%-103% were obtained in synthetic magnolol mixture samples,which showed that the ECL sensor exhibited excellent repeatability and stability.
作者
曾磊
曹宇
雷福厚
史伯安
ZENG Lei;CAO Yu;LEI Fuhou;SHI Bo'an(School of Chemical and Environmental Engineering,Hubei Minzu University,Enshi 445000,China;School of Chemistry and Chemical Engineering,Guangxi key Laboratory of Chemistry and Engineering of Forest Products,Guangxi University for Nationalities,Nanning 530006,China)
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2020年第1期25-30,共6页
Chemistry and Industry of Forest Products
基金
国家自然科学基金资助项目(31460172)
广西林产化学与工程重点实验室开放基金资助项目(GXFC16-02)
