Chen Xiaohui, Yin Jiahao, Zhang Chao, Lu Nian, Chen Zhidong
School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering.
School of Materials Science & Engineering, Changzhou University.
Anal Sci. 2017;33(10):1123-1128. doi: 10.2116/analsci.33.1123.
A novel solid-state electrochemiluminescence (ECL) quenching sensor was constructed for determination of brilliant blue FCF (BB FCF). Under a simple electropolymerization step, poly(sulfosalicylic acid) (PSSA) film attached luminophore Ru(bpy) was successfully formed on the surface of a glass carbon electrode [Ru(bpy)-PSSA/GCE], which exhibited excellent ECL behavior. A high quenching effect on the ECL signal of the Ru(bpy)-PSSA/GCE was obtained with the presence of low concentration of BB FCF. Moreover, the quenched ECL intensity showed a linear relation within the BB FCF concentration range of 0.5 - 7 and 7 - 10 μmol/L, with a detection limit of 57 nmol/L (S/N = 3). Besides, Ru(bpy)-PSSA/GCE exhibited good reproducibility and was successfully applied in the practical detection of BB FCF in peppermint candy samples.
构建了一种用于测定亮蓝FCF（BB FCF）的新型固态电化学发光（ECL）猝灭传感器。在简单的电聚合步骤下，聚（磺基水杨酸）（PSSA）膜附着的发光体Ru（bpy）成功地在玻碳电极表面形成[Ru（bpy）-PSSA/GCE]，其表现出优异的ECL行为。在低浓度BB FCF存在下，对Ru（bpy）-PSSA/GCE的ECL信号获得了高猝灭效果。此外，猝灭的ECL强度在0.5 - 7和7 - 10 μmol/L的BB FCF浓度范围内呈线性关系，检测限为57 nmol/L（S/N = 3）。此外，Ru（bpy）-PSSA/GCE表现出良好的重现性，并成功应用于薄荷糖样品中BB FCF的实际检测。
